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1 ;;; cl-seq.el --- Common Lisp extensions for GNU Emacs Lisp (part three)
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2
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3 ;; Copyright (C) 1993 Free Software Foundation, Inc.
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4
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5 ;; Author: Dave Gillespie <daveg@synaptics.com>
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6 ;; Version: 2.02
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7 ;; Keywords: extensions
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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2
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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0
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25
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2
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26 ;;; Synched up with: FSF 19.34.
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27
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28 ;;; Commentary:
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29
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30 ;; These are extensions to Emacs Lisp that provide a degree of
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31 ;; Common Lisp compatibility, beyond what is already built-in
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32 ;; in Emacs Lisp.
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33 ;;
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34 ;; This package was written by Dave Gillespie; it is a complete
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35 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986.
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36 ;;
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37 ;; This package works with Emacs 18, Emacs 19, and Lucid Emacs 19.
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38 ;;
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39 ;; Bug reports, comments, and suggestions are welcome!
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40
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41 ;; This file contains the Common Lisp sequence and list functions
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42 ;; which take keyword arguments.
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43
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44 ;; See cl.el for Change Log.
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45
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46
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47 ;;; Code:
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48
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49 (or (memq 'cl-19 features)
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50 (error "Tried to load `cl-seq' before `cl'!"))
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51
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52
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53 ;;; We define these here so that this file can compile without having
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54 ;;; loaded the cl.el file already.
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55
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56 (defmacro cl-push (x place) (list 'setq place (list 'cons x place)))
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57 (defmacro cl-pop (place)
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58 (list 'car (list 'prog1 place (list 'setq place (list 'cdr place)))))
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59
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60
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61 ;;; Keyword parsing. This is special-cased here so that we can compile
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62 ;;; this file independent from cl-macs.
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63
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64 (defmacro cl-parsing-keywords (kwords other-keys &rest body)
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65 (cons
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66 'let*
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67 (cons (mapcar
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68 (function
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69 (lambda (x)
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70 (let* ((var (if (consp x) (car x) x))
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71 (mem (list 'car (list 'cdr (list 'memq (list 'quote var)
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72 'cl-keys)))))
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73 (if (eq var ':test-not)
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74 (setq mem (list 'and mem (list 'setq 'cl-test mem) t)))
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75 (if (eq var ':if-not)
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76 (setq mem (list 'and mem (list 'setq 'cl-if mem) t)))
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77 (list (intern
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78 (format "cl-%s" (substring (symbol-name var) 1)))
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79 (if (consp x) (list 'or mem (car (cdr x))) mem)))))
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80 kwords)
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81 (append
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82 (and (not (eq other-keys t))
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83 (list
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84 (list 'let '((cl-keys-temp cl-keys))
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85 (list 'while 'cl-keys-temp
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86 (list 'or (list 'memq '(car cl-keys-temp)
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87 (list 'quote
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88 (mapcar
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89 (function
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90 (lambda (x)
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91 (if (consp x)
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92 (car x) x)))
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93 (append kwords
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94 other-keys))))
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95 '(car (cdr (memq (quote :allow-other-keys)
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96 cl-keys)))
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97 '(error "Bad keyword argument %s"
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98 (car cl-keys-temp)))
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99 '(setq cl-keys-temp (cdr (cdr cl-keys-temp)))))))
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100 body))))
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101 (put 'cl-parsing-keywords 'lisp-indent-function 2)
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102 (put 'cl-parsing-keywords 'edebug-form-spec '(sexp sexp &rest form))
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103
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104 (defmacro cl-check-key (x)
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105 (list 'if 'cl-key (list 'funcall 'cl-key x) x))
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106
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107 (defmacro cl-check-test-nokey (item x)
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108 (list 'cond
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109 (list 'cl-test
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110 (list 'eq (list 'not (list 'funcall 'cl-test item x))
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111 'cl-test-not))
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112 (list 'cl-if
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113 (list 'eq (list 'not (list 'funcall 'cl-if x)) 'cl-if-not))
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114 (list 't (list 'if (list 'numberp item)
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115 (list 'equal item x) (list 'eq item x)))))
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116
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117 (defmacro cl-check-test (item x)
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118 (list 'cl-check-test-nokey item (list 'cl-check-key x)))
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119
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120 (defmacro cl-check-match (x y)
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121 (setq x (list 'cl-check-key x) y (list 'cl-check-key y))
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122 (list 'if 'cl-test
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123 (list 'eq (list 'not (list 'funcall 'cl-test x y)) 'cl-test-not)
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124 (list 'if (list 'numberp x)
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125 (list 'equal x y) (list 'eq x y))))
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126
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127 (put 'cl-check-key 'edebug-form-spec 'edebug-forms)
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128 (put 'cl-check-test 'edebug-form-spec 'edebug-forms)
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129 (put 'cl-check-test-nokey 'edebug-form-spec 'edebug-forms)
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130 (put 'cl-check-match 'edebug-form-spec 'edebug-forms)
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131
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132 (defvar cl-test) (defvar cl-test-not)
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133 (defvar cl-if) (defvar cl-if-not)
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134 (defvar cl-key)
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135
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136
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137 (defun reduce (cl-func cl-seq &rest cl-keys)
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138 "Reduce two-argument FUNCTION across SEQUENCE.
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139 Keywords supported: :start :end :from-end :initial-value :key"
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140 (cl-parsing-keywords (:from-end (:start 0) :end :initial-value :key) ()
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141 (or (listp cl-seq) (setq cl-seq (append cl-seq nil)))
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142 (setq cl-seq (subseq cl-seq cl-start cl-end))
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143 (if cl-from-end (setq cl-seq (nreverse cl-seq)))
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144 (let ((cl-accum (cond ((memq ':initial-value cl-keys) cl-initial-value)
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145 (cl-seq (cl-check-key (cl-pop cl-seq)))
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146 (t (funcall cl-func)))))
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147 (if cl-from-end
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148 (while cl-seq
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149 (setq cl-accum (funcall cl-func (cl-check-key (cl-pop cl-seq))
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150 cl-accum)))
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151 (while cl-seq
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152 (setq cl-accum (funcall cl-func cl-accum
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153 (cl-check-key (cl-pop cl-seq))))))
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154 cl-accum)))
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155
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156 (defun fill (seq item &rest cl-keys)
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157 "Fill the elements of SEQ with ITEM.
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158 Keywords supported: :start :end"
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159 (cl-parsing-keywords ((:start 0) :end) ()
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160 (if (listp seq)
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161 (let ((p (nthcdr cl-start seq))
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162 (n (if cl-end (- cl-end cl-start) 8000000)))
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163 (while (and p (>= (setq n (1- n)) 0))
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164 (setcar p item)
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165 (setq p (cdr p))))
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166 (or cl-end (setq cl-end (length seq)))
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167 (if (and (= cl-start 0) (= cl-end (length seq)))
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168 (fillarray seq item)
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169 (while (< cl-start cl-end)
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170 (aset seq cl-start item)
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171 (setq cl-start (1+ cl-start)))))
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172 seq))
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173
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174 (defun replace (cl-seq1 cl-seq2 &rest cl-keys)
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175 "Replace the elements of SEQ1 with the elements of SEQ2.
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176 SEQ1 is destructively modified, then returned.
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177 Keywords supported: :start1 :end1 :start2 :end2"
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178 (cl-parsing-keywords ((:start1 0) :end1 (:start2 0) :end2) ()
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179 (if (and (eq cl-seq1 cl-seq2) (<= cl-start2 cl-start1))
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180 (or (= cl-start1 cl-start2)
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181 (let* ((cl-len (length cl-seq1))
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182 (cl-n (min (- (or cl-end1 cl-len) cl-start1)
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183 (- (or cl-end2 cl-len) cl-start2))))
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184 (while (>= (setq cl-n (1- cl-n)) 0)
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185 (cl-set-elt cl-seq1 (+ cl-start1 cl-n)
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186 (elt cl-seq2 (+ cl-start2 cl-n))))))
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187 (if (listp cl-seq1)
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188 (let ((cl-p1 (nthcdr cl-start1 cl-seq1))
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189 (cl-n1 (if cl-end1 (- cl-end1 cl-start1) 4000000)))
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190 (if (listp cl-seq2)
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191 (let ((cl-p2 (nthcdr cl-start2 cl-seq2))
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192 (cl-n (min cl-n1
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193 (if cl-end2 (- cl-end2 cl-start2) 4000000))))
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194 (while (and cl-p1 cl-p2 (>= (setq cl-n (1- cl-n)) 0))
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195 (setcar cl-p1 (car cl-p2))
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196 (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2))))
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197 (setq cl-end2 (min (or cl-end2 (length cl-seq2))
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198 (+ cl-start2 cl-n1)))
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199 (while (and cl-p1 (< cl-start2 cl-end2))
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200 (setcar cl-p1 (aref cl-seq2 cl-start2))
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201 (setq cl-p1 (cdr cl-p1) cl-start2 (1+ cl-start2)))))
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202 (setq cl-end1 (min (or cl-end1 (length cl-seq1))
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203 (+ cl-start1 (- (or cl-end2 (length cl-seq2))
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204 cl-start2))))
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205 (if (listp cl-seq2)
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206 (let ((cl-p2 (nthcdr cl-start2 cl-seq2)))
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207 (while (< cl-start1 cl-end1)
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208 (aset cl-seq1 cl-start1 (car cl-p2))
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209 (setq cl-p2 (cdr cl-p2) cl-start1 (1+ cl-start1))))
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210 (while (< cl-start1 cl-end1)
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211 (aset cl-seq1 cl-start1 (aref cl-seq2 cl-start2))
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212 (setq cl-start2 (1+ cl-start2) cl-start1 (1+ cl-start1))))))
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213 cl-seq1))
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214
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215 (defun remove* (cl-item cl-seq &rest cl-keys)
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216 "Remove all occurrences of ITEM in SEQ.
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217 This is a non-destructive function; it makes a copy of SEQ if necessary
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218 to avoid corrupting the original SEQ.
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219 Keywords supported: :test :test-not :key :count :start :end :from-end"
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220 (cl-parsing-keywords (:test :test-not :key :if :if-not :count :from-end
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221 (:start 0) :end) ()
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222 (if (<= (or cl-count (setq cl-count 8000000)) 0)
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223 cl-seq
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224 (if (or (nlistp cl-seq) (and cl-from-end (< cl-count 4000000)))
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225 (let ((cl-i (cl-position cl-item cl-seq cl-start cl-end
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226 cl-from-end)))
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227 (if cl-i
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228 (let ((cl-res (apply 'delete* cl-item (append cl-seq nil)
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229 (append (if cl-from-end
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230 (list ':end (1+ cl-i))
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231 (list ':start cl-i))
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232 cl-keys))))
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233 (if (listp cl-seq) cl-res
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234 (if (stringp cl-seq) (concat cl-res) (vconcat cl-res))))
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235 cl-seq))
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236 (setq cl-end (- (or cl-end 8000000) cl-start))
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237 (if (= cl-start 0)
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238 (while (and cl-seq (> cl-end 0)
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239 (cl-check-test cl-item (car cl-seq))
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240 (setq cl-end (1- cl-end) cl-seq (cdr cl-seq))
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241 (> (setq cl-count (1- cl-count)) 0))))
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242 (if (and (> cl-count 0) (> cl-end 0))
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243 (let ((cl-p (if (> cl-start 0) (nthcdr cl-start cl-seq)
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244 (setq cl-end (1- cl-end)) (cdr cl-seq))))
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245 (while (and cl-p (> cl-end 0)
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246 (not (cl-check-test cl-item (car cl-p))))
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247 (setq cl-p (cdr cl-p) cl-end (1- cl-end)))
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248 (if (and cl-p (> cl-end 0))
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249 (nconc (ldiff cl-seq cl-p)
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250 (if (= cl-count 1) (cdr cl-p)
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251 (and (cdr cl-p)
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252 (apply 'delete* cl-item
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253 (copy-sequence (cdr cl-p))
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254 ':start 0 ':end (1- cl-end)
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255 ':count (1- cl-count) cl-keys))))
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256 cl-seq))
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257 cl-seq)))))
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258
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259 (defun remove-if (cl-pred cl-list &rest cl-keys)
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260 "Remove all items satisfying PREDICATE in SEQ.
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261 This is a non-destructive function; it makes a copy of SEQ if necessary
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262 to avoid corrupting the original SEQ.
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263 Keywords supported: :key :count :start :end :from-end"
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264 (apply 'remove* nil cl-list ':if cl-pred cl-keys))
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265
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266 (defun remove-if-not (cl-pred cl-list &rest cl-keys)
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267 "Remove all items not satisfying PREDICATE in SEQ.
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268 This is a non-destructive function; it makes a copy of SEQ if necessary
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269 to avoid corrupting the original SEQ.
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270 Keywords supported: :key :count :start :end :from-end"
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271 (apply 'remove* nil cl-list ':if-not cl-pred cl-keys))
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272
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273 (defun delete* (cl-item cl-seq &rest cl-keys)
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274 "Remove all occurrences of ITEM in SEQ.
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275 This is a destructive function; it reuses the storage of SEQ whenever possible.
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276 Keywords supported: :test :test-not :key :count :start :end :from-end"
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277 (cl-parsing-keywords (:test :test-not :key :if :if-not :count :from-end
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278 (:start 0) :end) ()
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279 (if (<= (or cl-count (setq cl-count 8000000)) 0)
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280 cl-seq
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281 (if (listp cl-seq)
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282 (if (and cl-from-end (< cl-count 4000000))
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283 (let (cl-i)
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284 (while (and (>= (setq cl-count (1- cl-count)) 0)
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285 (setq cl-i (cl-position cl-item cl-seq cl-start
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286 cl-end cl-from-end)))
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287 (if (= cl-i 0) (setq cl-seq (cdr cl-seq))
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288 (let ((cl-tail (nthcdr (1- cl-i) cl-seq)))
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289 (setcdr cl-tail (cdr (cdr cl-tail)))))
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290 (setq cl-end cl-i))
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291 cl-seq)
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292 (setq cl-end (- (or cl-end 8000000) cl-start))
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293 (if (= cl-start 0)
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294 (progn
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295 (while (and cl-seq
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296 (> cl-end 0)
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297 (cl-check-test cl-item (car cl-seq))
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298 (setq cl-end (1- cl-end) cl-seq (cdr cl-seq))
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299 (> (setq cl-count (1- cl-count)) 0)))
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300 (setq cl-end (1- cl-end)))
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301 (setq cl-start (1- cl-start)))
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302 (if (and (> cl-count 0) (> cl-end 0))
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303 (let ((cl-p (nthcdr cl-start cl-seq)))
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304 (while (and (cdr cl-p) (> cl-end 0))
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305 (if (cl-check-test cl-item (car (cdr cl-p)))
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306 (progn
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307 (setcdr cl-p (cdr (cdr cl-p)))
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308 (if (= (setq cl-count (1- cl-count)) 0)
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309 (setq cl-end 1)))
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310 (setq cl-p (cdr cl-p)))
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311 (setq cl-end (1- cl-end)))))
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312 cl-seq)
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313 (apply 'remove* cl-item cl-seq cl-keys)))))
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314
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315 (defun delete-if (cl-pred cl-list &rest cl-keys)
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316 "Remove all items satisfying PREDICATE in SEQ.
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317 This is a destructive function; it reuses the storage of SEQ whenever possible.
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318 Keywords supported: :key :count :start :end :from-end"
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319 (apply 'delete* nil cl-list ':if cl-pred cl-keys))
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320
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321 (defun delete-if-not (cl-pred cl-list &rest cl-keys)
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322 "Remove all items not satisfying PREDICATE in SEQ.
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323 This is a destructive function; it reuses the storage of SEQ whenever possible.
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324 Keywords supported: :key :count :start :end :from-end"
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325 (apply 'delete* nil cl-list ':if-not cl-pred cl-keys))
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326
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327 (or (and (fboundp 'delete) (subrp (symbol-function 'delete)))
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328 (defalias 'delete (function (lambda (x y) (delete* x y ':test 'equal)))))
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329 (defun remove (x y) (remove* x y ':test 'equal))
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330 (defun remq (x y) (if (memq x y) (delq x (copy-list y)) y))
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331
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332 (defun remove-duplicates (cl-seq &rest cl-keys)
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333 "Return a copy of SEQ with all duplicate elements removed.
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334 Keywords supported: :test :test-not :key :start :end :from-end"
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335 (cl-delete-duplicates cl-seq cl-keys t))
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336
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337 (defun delete-duplicates (cl-seq &rest cl-keys)
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338 "Remove all duplicate elements from SEQ (destructively).
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339 Keywords supported: :test :test-not :key :start :end :from-end"
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340 (cl-delete-duplicates cl-seq cl-keys nil))
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341
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342 (defun cl-delete-duplicates (cl-seq cl-keys cl-copy)
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343 (if (listp cl-seq)
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344 (cl-parsing-keywords (:test :test-not :key (:start 0) :end :from-end :if)
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345 ()
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346 (if cl-from-end
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347 (let ((cl-p (nthcdr cl-start cl-seq)) cl-i)
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348 (setq cl-end (- (or cl-end (length cl-seq)) cl-start))
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349 (while (> cl-end 1)
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350 (setq cl-i 0)
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351 (while (setq cl-i (cl-position (cl-check-key (car cl-p))
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352 (cdr cl-p) cl-i (1- cl-end)))
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353 (if cl-copy (setq cl-seq (copy-sequence cl-seq)
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354 cl-p (nthcdr cl-start cl-seq) cl-copy nil))
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355 (let ((cl-tail (nthcdr cl-i cl-p)))
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356 (setcdr cl-tail (cdr (cdr cl-tail))))
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357 (setq cl-end (1- cl-end)))
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358 (setq cl-p (cdr cl-p) cl-end (1- cl-end)
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359 cl-start (1+ cl-start)))
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360 cl-seq)
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361 (setq cl-end (- (or cl-end (length cl-seq)) cl-start))
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362 (while (and (cdr cl-seq) (= cl-start 0) (> cl-end 1)
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363 (cl-position (cl-check-key (car cl-seq))
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364 (cdr cl-seq) 0 (1- cl-end)))
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365 (setq cl-seq (cdr cl-seq) cl-end (1- cl-end)))
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366 (let ((cl-p (if (> cl-start 0) (nthcdr (1- cl-start) cl-seq)
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367 (setq cl-end (1- cl-end) cl-start 1) cl-seq)))
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368 (while (and (cdr (cdr cl-p)) (> cl-end 1))
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369 (if (cl-position (cl-check-key (car (cdr cl-p)))
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370 (cdr (cdr cl-p)) 0 (1- cl-end))
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371 (progn
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372 (if cl-copy (setq cl-seq (copy-sequence cl-seq)
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373 cl-p (nthcdr (1- cl-start) cl-seq)
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374 cl-copy nil))
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375 (setcdr cl-p (cdr (cdr cl-p))))
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376 (setq cl-p (cdr cl-p)))
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377 (setq cl-end (1- cl-end) cl-start (1+ cl-start)))
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378 cl-seq)))
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379 (let ((cl-res (cl-delete-duplicates (append cl-seq nil) cl-keys nil)))
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380 (if (stringp cl-seq) (concat cl-res) (vconcat cl-res)))))
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381
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382 (defun substitute (cl-new cl-old cl-seq &rest cl-keys)
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383 "Substitute NEW for OLD in SEQ.
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384 This is a non-destructive function; it makes a copy of SEQ if necessary
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385 to avoid corrupting the original SEQ.
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386 Keywords supported: :test :test-not :key :count :start :end :from-end"
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387 (cl-parsing-keywords (:test :test-not :key :if :if-not :count
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388 (:start 0) :end :from-end) ()
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389 (if (or (eq cl-old cl-new)
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390 (<= (or cl-count (setq cl-from-end nil cl-count 8000000)) 0))
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391 cl-seq
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392 (let ((cl-i (cl-position cl-old cl-seq cl-start cl-end)))
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393 (if (not cl-i)
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394 cl-seq
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395 (setq cl-seq (copy-sequence cl-seq))
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396 (or cl-from-end
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397 (progn (cl-set-elt cl-seq cl-i cl-new)
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398 (setq cl-i (1+ cl-i) cl-count (1- cl-count))))
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399 (apply 'nsubstitute cl-new cl-old cl-seq ':count cl-count
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400 ':start cl-i cl-keys))))))
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401
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402 (defun substitute-if (cl-new cl-pred cl-list &rest cl-keys)
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403 "Substitute NEW for all items satisfying PREDICATE in SEQ.
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404 This is a non-destructive function; it makes a copy of SEQ if necessary
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405 to avoid corrupting the original SEQ.
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406 Keywords supported: :key :count :start :end :from-end"
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407 (apply 'substitute cl-new nil cl-list ':if cl-pred cl-keys))
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408
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409 (defun substitute-if-not (cl-new cl-pred cl-list &rest cl-keys)
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410 "Substitute NEW for all items not satisfying PREDICATE in SEQ.
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411 This is a non-destructive function; it makes a copy of SEQ if necessary
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412 to avoid corrupting the original SEQ.
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413 Keywords supported: :key :count :start :end :from-end"
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414 (apply 'substitute cl-new nil cl-list ':if-not cl-pred cl-keys))
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415
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416 (defun nsubstitute (cl-new cl-old cl-seq &rest cl-keys)
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417 "Substitute NEW for OLD in SEQ.
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418 This is a destructive function; it reuses the storage of SEQ whenever possible.
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419 Keywords supported: :test :test-not :key :count :start :end :from-end"
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420 (cl-parsing-keywords (:test :test-not :key :if :if-not :count
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421 (:start 0) :end :from-end) ()
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422 (or (eq cl-old cl-new) (<= (or cl-count (setq cl-count 8000000)) 0)
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423 (if (and (listp cl-seq) (or (not cl-from-end) (> cl-count 4000000)))
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424 (let ((cl-p (nthcdr cl-start cl-seq)))
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425 (setq cl-end (- (or cl-end 8000000) cl-start))
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426 (while (and cl-p (> cl-end 0) (> cl-count 0))
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427 (if (cl-check-test cl-old (car cl-p))
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428 (progn
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429 (setcar cl-p cl-new)
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430 (setq cl-count (1- cl-count))))
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431 (setq cl-p (cdr cl-p) cl-end (1- cl-end))))
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432 (or cl-end (setq cl-end (length cl-seq)))
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433 (if cl-from-end
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434 (while (and (< cl-start cl-end) (> cl-count 0))
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435 (setq cl-end (1- cl-end))
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436 (if (cl-check-test cl-old (elt cl-seq cl-end))
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|
437 (progn
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|
438 (cl-set-elt cl-seq cl-end cl-new)
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439 (setq cl-count (1- cl-count)))))
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440 (while (and (< cl-start cl-end) (> cl-count 0))
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441 (if (cl-check-test cl-old (aref cl-seq cl-start))
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442 (progn
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|
443 (aset cl-seq cl-start cl-new)
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|
444 (setq cl-count (1- cl-count))))
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|
445 (setq cl-start (1+ cl-start))))))
|
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|
446 cl-seq))
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|
447
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|
448 (defun nsubstitute-if (cl-new cl-pred cl-list &rest cl-keys)
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|
449 "Substitute NEW for all items satisfying PREDICATE in SEQ.
|
|
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450 This is a destructive function; it reuses the storage of SEQ whenever possible.
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451 Keywords supported: :key :count :start :end :from-end"
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452 (apply 'nsubstitute cl-new nil cl-list ':if cl-pred cl-keys))
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453
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454 (defun nsubstitute-if-not (cl-new cl-pred cl-list &rest cl-keys)
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455 "Substitute NEW for all items not satisfying PREDICATE in SEQ.
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|
456 This is a destructive function; it reuses the storage of SEQ whenever possible.
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457 Keywords supported: :key :count :start :end :from-end"
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458 (apply 'nsubstitute cl-new nil cl-list ':if-not cl-pred cl-keys))
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459
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460 (defun find (cl-item cl-seq &rest cl-keys)
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|
461 "Find the first occurrence of ITEM in LIST.
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|
462 Return the matching ITEM, or nil if not found.
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|
463 Keywords supported: :test :test-not :key :start :end :from-end"
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|
|
464 (let ((cl-pos (apply 'position cl-item cl-seq cl-keys)))
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465 (and cl-pos (elt cl-seq cl-pos))))
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466
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|
|
467 (defun find-if (cl-pred cl-list &rest cl-keys)
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|
468 "Find the first item satisfying PREDICATE in LIST.
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|
|
469 Return the matching ITEM, or nil if not found.
|
|
|
470 Keywords supported: :key :start :end :from-end"
|
|
|
471 (apply 'find nil cl-list ':if cl-pred cl-keys))
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|
|
472
|
|
|
473 (defun find-if-not (cl-pred cl-list &rest cl-keys)
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|
474 "Find the first item not satisfying PREDICATE in LIST.
|
|
|
475 Return the matching ITEM, or nil if not found.
|
|
|
476 Keywords supported: :key :start :end :from-end"
|
|
|
477 (apply 'find nil cl-list ':if-not cl-pred cl-keys))
|
|
|
478
|
|
|
479 (defun position (cl-item cl-seq &rest cl-keys)
|
|
|
480 "Find the first occurrence of ITEM in LIST.
|
|
|
481 Return the index of the matching item, or nil if not found.
|
|
|
482 Keywords supported: :test :test-not :key :start :end :from-end"
|
|
|
483 (cl-parsing-keywords (:test :test-not :key :if :if-not
|
|
|
484 (:start 0) :end :from-end) ()
|
|
|
485 (cl-position cl-item cl-seq cl-start cl-end cl-from-end)))
|
|
|
486
|
|
|
487 (defun cl-position (cl-item cl-seq cl-start &optional cl-end cl-from-end)
|
|
|
488 (if (listp cl-seq)
|
|
|
489 (let ((cl-p (nthcdr cl-start cl-seq)))
|
|
|
490 (or cl-end (setq cl-end 8000000))
|
|
|
491 (let ((cl-res nil))
|
|
|
492 (while (and cl-p (< cl-start cl-end) (or (not cl-res) cl-from-end))
|
|
|
493 (if (cl-check-test cl-item (car cl-p))
|
|
|
494 (setq cl-res cl-start))
|
|
|
495 (setq cl-p (cdr cl-p) cl-start (1+ cl-start)))
|
|
|
496 cl-res))
|
|
|
497 (or cl-end (setq cl-end (length cl-seq)))
|
|
|
498 (if cl-from-end
|
|
|
499 (progn
|
|
|
500 (while (and (>= (setq cl-end (1- cl-end)) cl-start)
|
|
|
501 (not (cl-check-test cl-item (aref cl-seq cl-end)))))
|
|
|
502 (and (>= cl-end cl-start) cl-end))
|
|
|
503 (while (and (< cl-start cl-end)
|
|
|
504 (not (cl-check-test cl-item (aref cl-seq cl-start))))
|
|
|
505 (setq cl-start (1+ cl-start)))
|
|
|
506 (and (< cl-start cl-end) cl-start))))
|
|
|
507
|
|
|
508 (defun position-if (cl-pred cl-list &rest cl-keys)
|
|
|
509 "Find the first item satisfying PREDICATE in LIST.
|
|
|
510 Return the index of the matching item, or nil if not found.
|
|
|
511 Keywords supported: :key :start :end :from-end"
|
|
|
512 (apply 'position nil cl-list ':if cl-pred cl-keys))
|
|
|
513
|
|
|
514 (defun position-if-not (cl-pred cl-list &rest cl-keys)
|
|
|
515 "Find the first item not satisfying PREDICATE in LIST.
|
|
|
516 Return the index of the matching item, or nil if not found.
|
|
|
517 Keywords supported: :key :start :end :from-end"
|
|
|
518 (apply 'position nil cl-list ':if-not cl-pred cl-keys))
|
|
|
519
|
|
|
520 (defun count (cl-item cl-seq &rest cl-keys)
|
|
|
521 "Count the number of occurrences of ITEM in LIST.
|
|
|
522 Keywords supported: :test :test-not :key :start :end"
|
|
|
523 (cl-parsing-keywords (:test :test-not :key :if :if-not (:start 0) :end) ()
|
|
|
524 (let ((cl-count 0) cl-x)
|
|
|
525 (or cl-end (setq cl-end (length cl-seq)))
|
|
|
526 (if (consp cl-seq) (setq cl-seq (nthcdr cl-start cl-seq)))
|
|
|
527 (while (< cl-start cl-end)
|
|
|
528 (setq cl-x (if (consp cl-seq) (cl-pop cl-seq) (aref cl-seq cl-start)))
|
|
|
529 (if (cl-check-test cl-item cl-x) (setq cl-count (1+ cl-count)))
|
|
|
530 (setq cl-start (1+ cl-start)))
|
|
|
531 cl-count)))
|
|
|
532
|
|
|
533 (defun count-if (cl-pred cl-list &rest cl-keys)
|
|
|
534 "Count the number of items satisfying PREDICATE in LIST.
|
|
|
535 Keywords supported: :key :start :end"
|
|
|
536 (apply 'count nil cl-list ':if cl-pred cl-keys))
|
|
|
537
|
|
|
538 (defun count-if-not (cl-pred cl-list &rest cl-keys)
|
|
|
539 "Count the number of items not satisfying PREDICATE in LIST.
|
|
|
540 Keywords supported: :key :start :end"
|
|
|
541 (apply 'count nil cl-list ':if-not cl-pred cl-keys))
|
|
|
542
|
|
|
543 (defun mismatch (cl-seq1 cl-seq2 &rest cl-keys)
|
|
|
544 "Compare SEQ1 with SEQ2, return index of first mismatching element.
|
|
|
545 Return nil if the sequences match. If one sequence is a prefix of the
|
|
|
546 other, the return value indicates the end of the shorted sequence.
|
|
|
547 Keywords supported: :test :test-not :key :start1 :end1 :start2 :end2 :from-end"
|
|
|
548 (cl-parsing-keywords (:test :test-not :key :from-end
|
|
|
549 (:start1 0) :end1 (:start2 0) :end2) ()
|
|
|
550 (or cl-end1 (setq cl-end1 (length cl-seq1)))
|
|
|
551 (or cl-end2 (setq cl-end2 (length cl-seq2)))
|
|
|
552 (if cl-from-end
|
|
|
553 (progn
|
|
|
554 (while (and (< cl-start1 cl-end1) (< cl-start2 cl-end2)
|
|
|
555 (cl-check-match (elt cl-seq1 (1- cl-end1))
|
|
|
556 (elt cl-seq2 (1- cl-end2))))
|
|
|
557 (setq cl-end1 (1- cl-end1) cl-end2 (1- cl-end2)))
|
|
|
558 (and (or (< cl-start1 cl-end1) (< cl-start2 cl-end2))
|
|
|
559 (1- cl-end1)))
|
|
|
560 (let ((cl-p1 (and (listp cl-seq1) (nthcdr cl-start1 cl-seq1)))
|
|
|
561 (cl-p2 (and (listp cl-seq2) (nthcdr cl-start2 cl-seq2))))
|
|
|
562 (while (and (< cl-start1 cl-end1) (< cl-start2 cl-end2)
|
|
|
563 (cl-check-match (if cl-p1 (car cl-p1)
|
|
|
564 (aref cl-seq1 cl-start1))
|
|
|
565 (if cl-p2 (car cl-p2)
|
|
|
566 (aref cl-seq2 cl-start2))))
|
|
|
567 (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2)
|
|
|
568 cl-start1 (1+ cl-start1) cl-start2 (1+ cl-start2)))
|
|
|
569 (and (or (< cl-start1 cl-end1) (< cl-start2 cl-end2))
|
|
|
570 cl-start1)))))
|
|
|
571
|
|
|
572 (defun search (cl-seq1 cl-seq2 &rest cl-keys)
|
|
|
573 "Search for SEQ1 as a subsequence of SEQ2.
|
|
|
574 Return the index of the leftmost element of the first match found;
|
|
|
575 return nil if there are no matches.
|
|
|
576 Keywords supported: :test :test-not :key :start1 :end1 :start2 :end2 :from-end"
|
|
|
577 (cl-parsing-keywords (:test :test-not :key :from-end
|
|
|
578 (:start1 0) :end1 (:start2 0) :end2) ()
|
|
|
579 (or cl-end1 (setq cl-end1 (length cl-seq1)))
|
|
|
580 (or cl-end2 (setq cl-end2 (length cl-seq2)))
|
|
|
581 (if (>= cl-start1 cl-end1)
|
|
|
582 (if cl-from-end cl-end2 cl-start2)
|
|
|
583 (let* ((cl-len (- cl-end1 cl-start1))
|
|
|
584 (cl-first (cl-check-key (elt cl-seq1 cl-start1)))
|
|
|
585 (cl-if nil) cl-pos)
|
|
|
586 (setq cl-end2 (- cl-end2 (1- cl-len)))
|
|
|
587 (while (and (< cl-start2 cl-end2)
|
|
|
588 (setq cl-pos (cl-position cl-first cl-seq2
|
|
|
589 cl-start2 cl-end2 cl-from-end))
|
|
|
590 (apply 'mismatch cl-seq1 cl-seq2
|
|
|
591 ':start1 (1+ cl-start1) ':end1 cl-end1
|
|
|
592 ':start2 (1+ cl-pos) ':end2 (+ cl-pos cl-len)
|
|
|
593 ':from-end nil cl-keys))
|
|
|
594 (if cl-from-end (setq cl-end2 cl-pos) (setq cl-start2 (1+ cl-pos))))
|
|
|
595 (and (< cl-start2 cl-end2) cl-pos)))))
|
|
|
596
|
|
|
597 (defun sort* (cl-seq cl-pred &rest cl-keys)
|
|
|
598 "Sort the argument SEQUENCE according to PREDICATE.
|
|
|
599 This is a destructive function; it reuses the storage of SEQUENCE if possible.
|
|
|
600 Keywords supported: :key"
|
|
|
601 (if (nlistp cl-seq)
|
|
|
602 (replace cl-seq (apply 'sort* (append cl-seq nil) cl-pred cl-keys))
|
|
|
603 (cl-parsing-keywords (:key) ()
|
|
|
604 (if (memq cl-key '(nil identity))
|
|
|
605 (sort cl-seq cl-pred)
|
|
|
606 (sort cl-seq (function (lambda (cl-x cl-y)
|
|
|
607 (funcall cl-pred (funcall cl-key cl-x)
|
|
|
608 (funcall cl-key cl-y)))))))))
|
|
|
609
|
|
|
610 (defun stable-sort (cl-seq cl-pred &rest cl-keys)
|
|
|
611 "Sort the argument SEQUENCE stably according to PREDICATE.
|
|
|
612 This is a destructive function; it reuses the storage of SEQUENCE if possible.
|
|
|
613 Keywords supported: :key"
|
|
|
614 (apply 'sort* cl-seq cl-pred cl-keys))
|
|
|
615
|
|
|
616 (defun merge (cl-type cl-seq1 cl-seq2 cl-pred &rest cl-keys)
|
|
|
617 "Destructively merge the two sequences to produce a new sequence.
|
|
|
618 TYPE is the sequence type to return, SEQ1 and SEQ2 are the two
|
|
|
619 argument sequences, and PRED is a `less-than' predicate on the elements.
|
|
|
620 Keywords supported: :key"
|
|
|
621 (or (listp cl-seq1) (setq cl-seq1 (append cl-seq1 nil)))
|
|
|
622 (or (listp cl-seq2) (setq cl-seq2 (append cl-seq2 nil)))
|
|
|
623 (cl-parsing-keywords (:key) ()
|
|
|
624 (let ((cl-res nil))
|
|
|
625 (while (and cl-seq1 cl-seq2)
|
|
|
626 (if (funcall cl-pred (cl-check-key (car cl-seq2))
|
|
|
627 (cl-check-key (car cl-seq1)))
|
|
|
628 (cl-push (cl-pop cl-seq2) cl-res)
|
|
|
629 (cl-push (cl-pop cl-seq1) cl-res)))
|
|
|
630 (coerce (nconc (nreverse cl-res) cl-seq1 cl-seq2) cl-type))))
|
|
|
631
|
|
|
632 ;;; See compiler macro in cl-macs.el
|
|
|
633 (defun member* (cl-item cl-list &rest cl-keys)
|
|
|
634 "Find the first occurrence of ITEM in LIST.
|
|
|
635 Return the sublist of LIST whose car is ITEM.
|
|
|
636 Keywords supported: :test :test-not :key"
|
|
|
637 (if cl-keys
|
|
|
638 (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
|
|
|
639 (while (and cl-list (not (cl-check-test cl-item (car cl-list))))
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|
|
640 (setq cl-list (cdr cl-list)))
|
|
|
641 cl-list)
|
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|
642 (if (and (numberp cl-item) (not (integerp cl-item)))
|
|
|
643 (member cl-item cl-list)
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|
644 (memq cl-item cl-list))))
|
|
|
645
|
|
|
646 (defun member-if (cl-pred cl-list &rest cl-keys)
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|
|
647 "Find the first item satisfying PREDICATE in LIST.
|
|
|
648 Return the sublist of LIST whose car matches.
|
|
|
649 Keywords supported: :key"
|
|
|
650 (apply 'member* nil cl-list ':if cl-pred cl-keys))
|
|
|
651
|
|
|
652 (defun member-if-not (cl-pred cl-list &rest cl-keys)
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|
|
653 "Find the first item not satisfying PREDICATE in LIST.
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|
|
654 Return the sublist of LIST whose car matches.
|
|
|
655 Keywords supported: :key"
|
|
|
656 (apply 'member* nil cl-list ':if-not cl-pred cl-keys))
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|
|
657
|
|
|
658 (defun cl-adjoin (cl-item cl-list &rest cl-keys)
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|
|
659 (if (cl-parsing-keywords (:key) t
|
|
|
660 (apply 'member* (cl-check-key cl-item) cl-list cl-keys))
|
|
|
661 cl-list
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|
662 (cons cl-item cl-list)))
|
|
|
663
|
|
|
664 ;;; See compiler macro in cl-macs.el
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|
|
665 (defun assoc* (cl-item cl-alist &rest cl-keys)
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|
|
666 "Find the first item whose car matches ITEM in LIST.
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|
667 Keywords supported: :test :test-not :key"
|
|
|
668 (if cl-keys
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|
|
669 (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
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|
|
670 (while (and cl-alist
|
|
|
671 (or (not (consp (car cl-alist)))
|
|
|
672 (not (cl-check-test cl-item (car (car cl-alist))))))
|
|
|
673 (setq cl-alist (cdr cl-alist)))
|
|
|
674 (and cl-alist (car cl-alist)))
|
|
|
675 (if (and (numberp cl-item) (not (integerp cl-item)))
|
|
|
676 (assoc cl-item cl-alist)
|
|
|
677 (assq cl-item cl-alist))))
|
|
|
678
|
|
|
679 (defun assoc-if (cl-pred cl-list &rest cl-keys)
|
|
|
680 "Find the first item whose car satisfies PREDICATE in LIST.
|
|
|
681 Keywords supported: :key"
|
|
|
682 (apply 'assoc* nil cl-list ':if cl-pred cl-keys))
|
|
|
683
|
|
|
684 (defun assoc-if-not (cl-pred cl-list &rest cl-keys)
|
|
|
685 "Find the first item whose car does not satisfy PREDICATE in LIST.
|
|
|
686 Keywords supported: :key"
|
|
|
687 (apply 'assoc* nil cl-list ':if-not cl-pred cl-keys))
|
|
|
688
|
|
|
689 (defun rassoc* (cl-item cl-alist &rest cl-keys)
|
|
|
690 "Find the first item whose cdr matches ITEM in LIST.
|
|
|
691 Keywords supported: :test :test-not :key"
|
|
|
692 (if (or cl-keys (numberp cl-item))
|
|
|
693 (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
|
|
|
694 (while (and cl-alist
|
|
|
695 (or (not (consp (car cl-alist)))
|
|
|
696 (not (cl-check-test cl-item (cdr (car cl-alist))))))
|
|
|
697 (setq cl-alist (cdr cl-alist)))
|
|
|
698 (and cl-alist (car cl-alist)))
|
|
|
699 (rassq cl-item cl-alist)))
|
|
|
700
|
|
|
701 (defun rassoc-if (cl-pred cl-list &rest cl-keys)
|
|
|
702 "Find the first item whose cdr satisfies PREDICATE in LIST.
|
|
|
703 Keywords supported: :key"
|
|
|
704 (apply 'rassoc* nil cl-list ':if cl-pred cl-keys))
|
|
|
705
|
|
|
706 (defun rassoc-if-not (cl-pred cl-list &rest cl-keys)
|
|
|
707 "Find the first item whose cdr does not satisfy PREDICATE in LIST.
|
|
|
708 Keywords supported: :key"
|
|
|
709 (apply 'rassoc* nil cl-list ':if-not cl-pred cl-keys))
|
|
|
710
|
|
|
711 (defun union (cl-list1 cl-list2 &rest cl-keys)
|
|
|
712 "Combine LIST1 and LIST2 using a set-union operation.
|
|
|
713 The result list contains all items that appear in either LIST1 or LIST2.
|
|
|
714 This is a non-destructive function; it makes a copy of the data if necessary
|
|
|
715 to avoid corrupting the original LIST1 and LIST2.
|
|
|
716 Keywords supported: :test :test-not :key"
|
|
|
717 (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
|
|
|
718 ((equal cl-list1 cl-list2) cl-list1)
|
|
|
719 (t
|
|
|
720 (or (>= (length cl-list1) (length cl-list2))
|
|
|
721 (setq cl-list1 (prog1 cl-list2 (setq cl-list2 cl-list1))))
|
|
|
722 (while cl-list2
|
|
|
723 (if (or cl-keys (numberp (car cl-list2)))
|
|
|
724 (setq cl-list1 (apply 'adjoin (car cl-list2) cl-list1 cl-keys))
|
|
|
725 (or (memq (car cl-list2) cl-list1)
|
|
|
726 (cl-push (car cl-list2) cl-list1)))
|
|
|
727 (cl-pop cl-list2))
|
|
|
728 cl-list1)))
|
|
|
729
|
|
|
730 (defun nunion (cl-list1 cl-list2 &rest cl-keys)
|
|
|
731 "Combine LIST1 and LIST2 using a set-union operation.
|
|
|
732 The result list contains all items that appear in either LIST1 or LIST2.
|
|
|
733 This is a destructive function; it reuses the storage of LIST1 and LIST2
|
|
|
734 whenever possible.
|
|
|
735 Keywords supported: :test :test-not :key"
|
|
|
736 (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
|
|
|
737 (t (apply 'union cl-list1 cl-list2 cl-keys))))
|
|
|
738
|
|
|
739 (defun intersection (cl-list1 cl-list2 &rest cl-keys)
|
|
|
740 "Combine LIST1 and LIST2 using a set-intersection operation.
|
|
|
741 The result list contains all items that appear in both LIST1 and LIST2.
|
|
|
742 This is a non-destructive function; it makes a copy of the data if necessary
|
|
|
743 to avoid corrupting the original LIST1 and LIST2.
|
|
|
744 Keywords supported: :test :test-not :key"
|
|
|
745 (and cl-list1 cl-list2
|
|
|
746 (if (equal cl-list1 cl-list2) cl-list1
|
|
|
747 (cl-parsing-keywords (:key) (:test :test-not)
|
|
|
748 (let ((cl-res nil))
|
|
|
749 (or (>= (length cl-list1) (length cl-list2))
|
|
|
750 (setq cl-list1 (prog1 cl-list2 (setq cl-list2 cl-list1))))
|
|
|
751 (while cl-list2
|
|
|
752 (if (if (or cl-keys (numberp (car cl-list2)))
|
|
|
753 (apply 'member* (cl-check-key (car cl-list2))
|
|
|
754 cl-list1 cl-keys)
|
|
|
755 (memq (car cl-list2) cl-list1))
|
|
|
756 (cl-push (car cl-list2) cl-res))
|
|
|
757 (cl-pop cl-list2))
|
|
|
758 cl-res)))))
|
|
|
759
|
|
|
760 (defun nintersection (cl-list1 cl-list2 &rest cl-keys)
|
|
|
761 "Combine LIST1 and LIST2 using a set-intersection operation.
|
|
|
762 The result list contains all items that appear in both LIST1 and LIST2.
|
|
|
763 This is a destructive function; it reuses the storage of LIST1 and LIST2
|
|
|
764 whenever possible.
|
|
|
765 Keywords supported: :test :test-not :key"
|
|
|
766 (and cl-list1 cl-list2 (apply 'intersection cl-list1 cl-list2 cl-keys)))
|
|
|
767
|
|
|
768 (defun set-difference (cl-list1 cl-list2 &rest cl-keys)
|
|
|
769 "Combine LIST1 and LIST2 using a set-difference operation.
|
|
|
770 The result list contains all items that appear in LIST1 but not LIST2.
|
|
|
771 This is a non-destructive function; it makes a copy of the data if necessary
|
|
|
772 to avoid corrupting the original LIST1 and LIST2.
|
|
|
773 Keywords supported: :test :test-not :key"
|
|
|
774 (if (or (null cl-list1) (null cl-list2)) cl-list1
|
|
|
775 (cl-parsing-keywords (:key) (:test :test-not)
|
|
|
776 (let ((cl-res nil))
|
|
|
777 (while cl-list1
|
|
|
778 (or (if (or cl-keys (numberp (car cl-list1)))
|
|
|
779 (apply 'member* (cl-check-key (car cl-list1))
|
|
|
780 cl-list2 cl-keys)
|
|
|
781 (memq (car cl-list1) cl-list2))
|
|
|
782 (cl-push (car cl-list1) cl-res))
|
|
|
783 (cl-pop cl-list1))
|
|
|
784 cl-res))))
|
|
|
785
|
|
|
786 (defun nset-difference (cl-list1 cl-list2 &rest cl-keys)
|
|
|
787 "Combine LIST1 and LIST2 using a set-difference operation.
|
|
|
788 The result list contains all items that appear in LIST1 but not LIST2.
|
|
|
789 This is a destructive function; it reuses the storage of LIST1 and LIST2
|
|
|
790 whenever possible.
|
|
|
791 Keywords supported: :test :test-not :key"
|
|
|
792 (if (or (null cl-list1) (null cl-list2)) cl-list1
|
|
|
793 (apply 'set-difference cl-list1 cl-list2 cl-keys)))
|
|
|
794
|
|
|
795 (defun set-exclusive-or (cl-list1 cl-list2 &rest cl-keys)
|
|
|
796 "Combine LIST1 and LIST2 using a set-exclusive-or operation.
|
|
|
797 The result list contains all items that appear in exactly one of LIST1, LIST2.
|
|
|
798 This is a non-destructive function; it makes a copy of the data if necessary
|
|
|
799 to avoid corrupting the original LIST1 and LIST2.
|
|
|
800 Keywords supported: :test :test-not :key"
|
|
|
801 (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
|
|
|
802 ((equal cl-list1 cl-list2) nil)
|
|
|
803 (t (append (apply 'set-difference cl-list1 cl-list2 cl-keys)
|
|
|
804 (apply 'set-difference cl-list2 cl-list1 cl-keys)))))
|
|
|
805
|
|
|
806 (defun nset-exclusive-or (cl-list1 cl-list2 &rest cl-keys)
|
|
|
807 "Combine LIST1 and LIST2 using a set-exclusive-or operation.
|
|
|
808 The result list contains all items that appear in exactly one of LIST1, LIST2.
|
|
|
809 This is a destructive function; it reuses the storage of LIST1 and LIST2
|
|
|
810 whenever possible.
|
|
|
811 Keywords supported: :test :test-not :key"
|
|
|
812 (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
|
|
|
813 ((equal cl-list1 cl-list2) nil)
|
|
|
814 (t (nconc (apply 'nset-difference cl-list1 cl-list2 cl-keys)
|
|
|
815 (apply 'nset-difference cl-list2 cl-list1 cl-keys)))))
|
|
|
816
|
|
|
817 (defun subsetp (cl-list1 cl-list2 &rest cl-keys)
|
|
|
818 "True if LIST1 is a subset of LIST2.
|
|
|
819 I.e., if every element of LIST1 also appears in LIST2.
|
|
|
820 Keywords supported: :test :test-not :key"
|
|
|
821 (cond ((null cl-list1) t) ((null cl-list2) nil)
|
|
|
822 ((equal cl-list1 cl-list2) t)
|
|
|
823 (t (cl-parsing-keywords (:key) (:test :test-not)
|
|
|
824 (while (and cl-list1
|
|
|
825 (apply 'member* (cl-check-key (car cl-list1))
|
|
|
826 cl-list2 cl-keys))
|
|
|
827 (cl-pop cl-list1))
|
|
|
828 (null cl-list1)))))
|
|
|
829
|
|
|
830 (defun subst-if (cl-new cl-pred cl-tree &rest cl-keys)
|
|
|
831 "Substitute NEW for elements matching PREDICATE in TREE (non-destructively).
|
|
|
832 Return a copy of TREE with all matching elements replaced by NEW.
|
|
|
833 Keywords supported: :key"
|
|
|
834 (apply 'sublis (list (cons nil cl-new)) cl-tree ':if cl-pred cl-keys))
|
|
|
835
|
|
|
836 (defun subst-if-not (cl-new cl-pred cl-tree &rest cl-keys)
|
|
|
837 "Substitute NEW for elts not matching PREDICATE in TREE (non-destructively).
|
|
|
838 Return a copy of TREE with all non-matching elements replaced by NEW.
|
|
|
839 Keywords supported: :key"
|
|
|
840 (apply 'sublis (list (cons nil cl-new)) cl-tree ':if-not cl-pred cl-keys))
|
|
|
841
|
|
|
842 (defun nsubst (cl-new cl-old cl-tree &rest cl-keys)
|
|
|
843 "Substitute NEW for OLD everywhere in TREE (destructively).
|
|
|
844 Any element of TREE which is `eql' to OLD is changed to NEW (via a call
|
|
|
845 to `setcar').
|
|
|
846 Keywords supported: :test :test-not :key"
|
|
|
847 (apply 'nsublis (list (cons cl-old cl-new)) cl-tree cl-keys))
|
|
|
848
|
|
|
849 (defun nsubst-if (cl-new cl-pred cl-tree &rest cl-keys)
|
|
|
850 "Substitute NEW for elements matching PREDICATE in TREE (destructively).
|
|
|
851 Any element of TREE which matches is changed to NEW (via a call to `setcar').
|
|
|
852 Keywords supported: :key"
|
|
|
853 (apply 'nsublis (list (cons nil cl-new)) cl-tree ':if cl-pred cl-keys))
|
|
|
854
|
|
|
855 (defun nsubst-if-not (cl-new cl-pred cl-tree &rest cl-keys)
|
|
|
856 "Substitute NEW for elements not matching PREDICATE in TREE (destructively).
|
|
|
857 Any element of TREE which matches is changed to NEW (via a call to `setcar').
|
|
|
858 Keywords supported: :key"
|
|
|
859 (apply 'nsublis (list (cons nil cl-new)) cl-tree ':if-not cl-pred cl-keys))
|
|
|
860
|
|
|
861 (defun sublis (cl-alist cl-tree &rest cl-keys)
|
|
|
862 "Perform substitutions indicated by ALIST in TREE (non-destructively).
|
|
|
863 Return a copy of TREE with all matching elements replaced.
|
|
|
864 Keywords supported: :test :test-not :key"
|
|
|
865 (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
|
|
|
866 (cl-sublis-rec cl-tree)))
|
|
|
867
|
|
|
868 (defvar cl-alist)
|
|
|
869 (defun cl-sublis-rec (cl-tree) ; uses cl-alist/key/test*/if*
|
|
|
870 (let ((cl-temp (cl-check-key cl-tree)) (cl-p cl-alist))
|
|
|
871 (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp)))
|
|
|
872 (setq cl-p (cdr cl-p)))
|
|
|
873 (if cl-p (cdr (car cl-p))
|
|
|
874 (if (consp cl-tree)
|
|
|
875 (let ((cl-a (cl-sublis-rec (car cl-tree)))
|
|
|
876 (cl-d (cl-sublis-rec (cdr cl-tree))))
|
|
|
877 (if (and (eq cl-a (car cl-tree)) (eq cl-d (cdr cl-tree)))
|
|
|
878 cl-tree
|
|
|
879 (cons cl-a cl-d)))
|
|
|
880 cl-tree))))
|
|
|
881
|
|
|
882 (defun nsublis (cl-alist cl-tree &rest cl-keys)
|
|
|
883 "Perform substitutions indicated by ALIST in TREE (destructively).
|
|
|
884 Any matching element of TREE is changed via a call to `setcar'.
|
|
|
885 Keywords supported: :test :test-not :key"
|
|
|
886 (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
|
|
|
887 (let ((cl-hold (list cl-tree)))
|
|
|
888 (cl-nsublis-rec cl-hold)
|
|
|
889 (car cl-hold))))
|
|
|
890
|
|
|
891 (defun cl-nsublis-rec (cl-tree) ; uses cl-alist/temp/p/key/test*/if*
|
|
|
892 (while (consp cl-tree)
|
|
|
893 (let ((cl-temp (cl-check-key (car cl-tree))) (cl-p cl-alist))
|
|
|
894 (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp)))
|
|
|
895 (setq cl-p (cdr cl-p)))
|
|
|
896 (if cl-p (setcar cl-tree (cdr (car cl-p)))
|
|
|
897 (if (consp (car cl-tree)) (cl-nsublis-rec (car cl-tree))))
|
|
|
898 (setq cl-temp (cl-check-key (cdr cl-tree)) cl-p cl-alist)
|
|
|
899 (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp)))
|
|
|
900 (setq cl-p (cdr cl-p)))
|
|
|
901 (if cl-p
|
|
|
902 (progn (setcdr cl-tree (cdr (car cl-p))) (setq cl-tree nil))
|
|
|
903 (setq cl-tree (cdr cl-tree))))))
|
|
|
904
|
|
|
905 (defun tree-equal (cl-x cl-y &rest cl-keys)
|
|
|
906 "T if trees X and Y have `eql' leaves.
|
|
|
907 Atoms are compared by `eql'; cons cells are compared recursively.
|
|
|
908 Keywords supported: :test :test-not :key"
|
|
|
909 (cl-parsing-keywords (:test :test-not :key) ()
|
|
|
910 (cl-tree-equal-rec cl-x cl-y)))
|
|
|
911
|
|
|
912 (defun cl-tree-equal-rec (cl-x cl-y)
|
|
|
913 (while (and (consp cl-x) (consp cl-y)
|
|
|
914 (cl-tree-equal-rec (car cl-x) (car cl-y)))
|
|
|
915 (setq cl-x (cdr cl-x) cl-y (cdr cl-y)))
|
|
|
916 (and (not (consp cl-x)) (not (consp cl-y)) (cl-check-match cl-x cl-y)))
|
|
|
917
|
|
|
918
|
|
|
919 (run-hooks 'cl-seq-load-hook)
|
|
|
920
|
|
|
921 ;;; cl-seq.el ends here
|
