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73217411 | 1 | ;;; cl-seq.el --- Common Lisp features, part 3 -*-byte-compile-dynamic: t;-*- |
fcd73769 RS |
2 | |
3 | ;; Copyright (C) 1993 Free Software Foundation, Inc. | |
4 | ||
5 | ;; Author: Dave Gillespie <daveg@synaptics.com> | |
6 | ;; Version: 2.02 | |
7 | ;; Keywords: extensions | |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
7c938215 | 13 | ;; the Free Software Foundation; either version 2, or (at your option) |
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14 | ;; any later version. |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
fcd73769 | 25 | |
07b3798c | 26 | ;;; Commentary: |
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27 | |
28 | ;; These are extensions to Emacs Lisp that provide a degree of | |
29 | ;; Common Lisp compatibility, beyond what is already built-in | |
30 | ;; in Emacs Lisp. | |
31 | ;; | |
32 | ;; This package was written by Dave Gillespie; it is a complete | |
33 | ;; rewrite of Cesar Quiroz's original cl.el package of December 1986. | |
34 | ;; | |
35 | ;; This package works with Emacs 18, Emacs 19, and Lucid Emacs 19. | |
36 | ;; | |
37 | ;; Bug reports, comments, and suggestions are welcome! | |
38 | ||
39 | ;; This file contains the Common Lisp sequence and list functions | |
40 | ;; which take keyword arguments. | |
41 | ||
42 | ;; See cl.el for Change Log. | |
43 | ||
44 | ||
07b3798c | 45 | ;;; Code: |
fcd73769 RS |
46 | |
47 | (or (memq 'cl-19 features) | |
48 | (error "Tried to load `cl-seq' before `cl'!")) | |
49 | ||
50 | ||
51 | ;;; We define these here so that this file can compile without having | |
52 | ;;; loaded the cl.el file already. | |
53 | ||
54 | (defmacro cl-push (x place) (list 'setq place (list 'cons x place))) | |
55 | (defmacro cl-pop (place) | |
56 | (list 'car (list 'prog1 place (list 'setq place (list 'cdr place))))) | |
57 | ||
58 | ||
59 | ;;; Keyword parsing. This is special-cased here so that we can compile | |
60 | ;;; this file independent from cl-macs. | |
61 | ||
62 | (defmacro cl-parsing-keywords (kwords other-keys &rest body) | |
63 | (cons | |
64 | 'let* | |
65 | (cons (mapcar | |
66 | (function | |
67 | (lambda (x) | |
68 | (let* ((var (if (consp x) (car x) x)) | |
69 | (mem (list 'car (list 'cdr (list 'memq (list 'quote var) | |
70 | 'cl-keys))))) | |
64a4c526 | 71 | (if (eq var :test-not) |
fcd73769 | 72 | (setq mem (list 'and mem (list 'setq 'cl-test mem) t))) |
64a4c526 | 73 | (if (eq var :if-not) |
fcd73769 RS |
74 | (setq mem (list 'and mem (list 'setq 'cl-if mem) t))) |
75 | (list (intern | |
76 | (format "cl-%s" (substring (symbol-name var) 1))) | |
77 | (if (consp x) (list 'or mem (car (cdr x))) mem))))) | |
78 | kwords) | |
79 | (append | |
80 | (and (not (eq other-keys t)) | |
81 | (list | |
82 | (list 'let '((cl-keys-temp cl-keys)) | |
83 | (list 'while 'cl-keys-temp | |
84 | (list 'or (list 'memq '(car cl-keys-temp) | |
85 | (list 'quote | |
86 | (mapcar | |
87 | (function | |
88 | (lambda (x) | |
89 | (if (consp x) | |
90 | (car x) x))) | |
91 | (append kwords | |
92 | other-keys)))) | |
93 | '(car (cdr (memq (quote :allow-other-keys) | |
94 | cl-keys))) | |
95 | '(error "Bad keyword argument %s" | |
96 | (car cl-keys-temp))) | |
97 | '(setq cl-keys-temp (cdr (cdr cl-keys-temp))))))) | |
98 | body)))) | |
99 | (put 'cl-parsing-keywords 'lisp-indent-function 2) | |
100 | (put 'cl-parsing-keywords 'edebug-form-spec '(sexp sexp &rest form)) | |
101 | ||
102 | (defmacro cl-check-key (x) | |
103 | (list 'if 'cl-key (list 'funcall 'cl-key x) x)) | |
104 | ||
105 | (defmacro cl-check-test-nokey (item x) | |
106 | (list 'cond | |
107 | (list 'cl-test | |
108 | (list 'eq (list 'not (list 'funcall 'cl-test item x)) | |
109 | 'cl-test-not)) | |
110 | (list 'cl-if | |
111 | (list 'eq (list 'not (list 'funcall 'cl-if x)) 'cl-if-not)) | |
112 | (list 't (list 'if (list 'numberp item) | |
113 | (list 'equal item x) (list 'eq item x))))) | |
114 | ||
115 | (defmacro cl-check-test (item x) | |
116 | (list 'cl-check-test-nokey item (list 'cl-check-key x))) | |
117 | ||
118 | (defmacro cl-check-match (x y) | |
119 | (setq x (list 'cl-check-key x) y (list 'cl-check-key y)) | |
120 | (list 'if 'cl-test | |
121 | (list 'eq (list 'not (list 'funcall 'cl-test x y)) 'cl-test-not) | |
122 | (list 'if (list 'numberp x) | |
123 | (list 'equal x y) (list 'eq x y)))) | |
124 | ||
125 | (put 'cl-check-key 'edebug-form-spec 'edebug-forms) | |
126 | (put 'cl-check-test 'edebug-form-spec 'edebug-forms) | |
127 | (put 'cl-check-test-nokey 'edebug-form-spec 'edebug-forms) | |
128 | (put 'cl-check-match 'edebug-form-spec 'edebug-forms) | |
129 | ||
130 | (defvar cl-test) (defvar cl-test-not) | |
131 | (defvar cl-if) (defvar cl-if-not) | |
132 | (defvar cl-key) | |
133 | ||
134 | ||
135 | (defun reduce (cl-func cl-seq &rest cl-keys) | |
136 | "Reduce two-argument FUNCTION across SEQUENCE. | |
137 | Keywords supported: :start :end :from-end :initial-value :key" | |
138 | (cl-parsing-keywords (:from-end (:start 0) :end :initial-value :key) () | |
139 | (or (listp cl-seq) (setq cl-seq (append cl-seq nil))) | |
140 | (setq cl-seq (subseq cl-seq cl-start cl-end)) | |
141 | (if cl-from-end (setq cl-seq (nreverse cl-seq))) | |
64a4c526 | 142 | (let ((cl-accum (cond ((memq :initial-value cl-keys) cl-initial-value) |
fcd73769 RS |
143 | (cl-seq (cl-check-key (cl-pop cl-seq))) |
144 | (t (funcall cl-func))))) | |
145 | (if cl-from-end | |
146 | (while cl-seq | |
147 | (setq cl-accum (funcall cl-func (cl-check-key (cl-pop cl-seq)) | |
148 | cl-accum))) | |
149 | (while cl-seq | |
150 | (setq cl-accum (funcall cl-func cl-accum | |
151 | (cl-check-key (cl-pop cl-seq)))))) | |
152 | cl-accum))) | |
153 | ||
154 | (defun fill (seq item &rest cl-keys) | |
155 | "Fill the elements of SEQ with ITEM. | |
156 | Keywords supported: :start :end" | |
157 | (cl-parsing-keywords ((:start 0) :end) () | |
158 | (if (listp seq) | |
159 | (let ((p (nthcdr cl-start seq)) | |
160 | (n (if cl-end (- cl-end cl-start) 8000000))) | |
161 | (while (and p (>= (setq n (1- n)) 0)) | |
162 | (setcar p item) | |
163 | (setq p (cdr p)))) | |
164 | (or cl-end (setq cl-end (length seq))) | |
165 | (if (and (= cl-start 0) (= cl-end (length seq))) | |
166 | (fillarray seq item) | |
167 | (while (< cl-start cl-end) | |
168 | (aset seq cl-start item) | |
169 | (setq cl-start (1+ cl-start))))) | |
170 | seq)) | |
171 | ||
172 | (defun replace (cl-seq1 cl-seq2 &rest cl-keys) | |
173 | "Replace the elements of SEQ1 with the elements of SEQ2. | |
174 | SEQ1 is destructively modified, then returned. | |
175 | Keywords supported: :start1 :end1 :start2 :end2" | |
176 | (cl-parsing-keywords ((:start1 0) :end1 (:start2 0) :end2) () | |
177 | (if (and (eq cl-seq1 cl-seq2) (<= cl-start2 cl-start1)) | |
178 | (or (= cl-start1 cl-start2) | |
179 | (let* ((cl-len (length cl-seq1)) | |
180 | (cl-n (min (- (or cl-end1 cl-len) cl-start1) | |
181 | (- (or cl-end2 cl-len) cl-start2)))) | |
182 | (while (>= (setq cl-n (1- cl-n)) 0) | |
183 | (cl-set-elt cl-seq1 (+ cl-start1 cl-n) | |
184 | (elt cl-seq2 (+ cl-start2 cl-n)))))) | |
185 | (if (listp cl-seq1) | |
186 | (let ((cl-p1 (nthcdr cl-start1 cl-seq1)) | |
187 | (cl-n1 (if cl-end1 (- cl-end1 cl-start1) 4000000))) | |
188 | (if (listp cl-seq2) | |
189 | (let ((cl-p2 (nthcdr cl-start2 cl-seq2)) | |
190 | (cl-n (min cl-n1 | |
191 | (if cl-end2 (- cl-end2 cl-start2) 4000000)))) | |
192 | (while (and cl-p1 cl-p2 (>= (setq cl-n (1- cl-n)) 0)) | |
193 | (setcar cl-p1 (car cl-p2)) | |
194 | (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2)))) | |
195 | (setq cl-end2 (min (or cl-end2 (length cl-seq2)) | |
196 | (+ cl-start2 cl-n1))) | |
197 | (while (and cl-p1 (< cl-start2 cl-end2)) | |
198 | (setcar cl-p1 (aref cl-seq2 cl-start2)) | |
199 | (setq cl-p1 (cdr cl-p1) cl-start2 (1+ cl-start2))))) | |
200 | (setq cl-end1 (min (or cl-end1 (length cl-seq1)) | |
201 | (+ cl-start1 (- (or cl-end2 (length cl-seq2)) | |
202 | cl-start2)))) | |
203 | (if (listp cl-seq2) | |
204 | (let ((cl-p2 (nthcdr cl-start2 cl-seq2))) | |
205 | (while (< cl-start1 cl-end1) | |
206 | (aset cl-seq1 cl-start1 (car cl-p2)) | |
207 | (setq cl-p2 (cdr cl-p2) cl-start1 (1+ cl-start1)))) | |
208 | (while (< cl-start1 cl-end1) | |
209 | (aset cl-seq1 cl-start1 (aref cl-seq2 cl-start2)) | |
210 | (setq cl-start2 (1+ cl-start2) cl-start1 (1+ cl-start1)))))) | |
211 | cl-seq1)) | |
212 | ||
213 | (defun remove* (cl-item cl-seq &rest cl-keys) | |
214 | "Remove all occurrences of ITEM in SEQ. | |
215 | This is a non-destructive function; it makes a copy of SEQ if necessary | |
216 | to avoid corrupting the original SEQ. | |
217 | Keywords supported: :test :test-not :key :count :start :end :from-end" | |
218 | (cl-parsing-keywords (:test :test-not :key :if :if-not :count :from-end | |
219 | (:start 0) :end) () | |
220 | (if (<= (or cl-count (setq cl-count 8000000)) 0) | |
221 | cl-seq | |
222 | (if (or (nlistp cl-seq) (and cl-from-end (< cl-count 4000000))) | |
223 | (let ((cl-i (cl-position cl-item cl-seq cl-start cl-end | |
224 | cl-from-end))) | |
225 | (if cl-i | |
226 | (let ((cl-res (apply 'delete* cl-item (append cl-seq nil) | |
227 | (append (if cl-from-end | |
64a4c526 DL |
228 | (list :end (1+ cl-i)) |
229 | (list :start cl-i)) | |
fcd73769 RS |
230 | cl-keys)))) |
231 | (if (listp cl-seq) cl-res | |
232 | (if (stringp cl-seq) (concat cl-res) (vconcat cl-res)))) | |
233 | cl-seq)) | |
234 | (setq cl-end (- (or cl-end 8000000) cl-start)) | |
235 | (if (= cl-start 0) | |
236 | (while (and cl-seq (> cl-end 0) | |
237 | (cl-check-test cl-item (car cl-seq)) | |
238 | (setq cl-end (1- cl-end) cl-seq (cdr cl-seq)) | |
239 | (> (setq cl-count (1- cl-count)) 0)))) | |
240 | (if (and (> cl-count 0) (> cl-end 0)) | |
241 | (let ((cl-p (if (> cl-start 0) (nthcdr cl-start cl-seq) | |
242 | (setq cl-end (1- cl-end)) (cdr cl-seq)))) | |
243 | (while (and cl-p (> cl-end 0) | |
244 | (not (cl-check-test cl-item (car cl-p)))) | |
245 | (setq cl-p (cdr cl-p) cl-end (1- cl-end))) | |
246 | (if (and cl-p (> cl-end 0)) | |
247 | (nconc (ldiff cl-seq cl-p) | |
248 | (if (= cl-count 1) (cdr cl-p) | |
249 | (and (cdr cl-p) | |
250 | (apply 'delete* cl-item | |
251 | (copy-sequence (cdr cl-p)) | |
64a4c526 DL |
252 | :start 0 :end (1- cl-end) |
253 | :count (1- cl-count) cl-keys)))) | |
fcd73769 RS |
254 | cl-seq)) |
255 | cl-seq))))) | |
256 | ||
257 | (defun remove-if (cl-pred cl-list &rest cl-keys) | |
258 | "Remove all items satisfying PREDICATE in SEQ. | |
259 | This is a non-destructive function; it makes a copy of SEQ if necessary | |
260 | to avoid corrupting the original SEQ. | |
261 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 262 | (apply 'remove* nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
263 | |
264 | (defun remove-if-not (cl-pred cl-list &rest cl-keys) | |
265 | "Remove all items not satisfying PREDICATE in SEQ. | |
266 | This is a non-destructive function; it makes a copy of SEQ if necessary | |
267 | to avoid corrupting the original SEQ. | |
268 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 269 | (apply 'remove* nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
270 | |
271 | (defun delete* (cl-item cl-seq &rest cl-keys) | |
272 | "Remove all occurrences of ITEM in SEQ. | |
273 | This is a destructive function; it reuses the storage of SEQ whenever possible. | |
274 | Keywords supported: :test :test-not :key :count :start :end :from-end" | |
275 | (cl-parsing-keywords (:test :test-not :key :if :if-not :count :from-end | |
276 | (:start 0) :end) () | |
277 | (if (<= (or cl-count (setq cl-count 8000000)) 0) | |
278 | cl-seq | |
279 | (if (listp cl-seq) | |
280 | (if (and cl-from-end (< cl-count 4000000)) | |
281 | (let (cl-i) | |
282 | (while (and (>= (setq cl-count (1- cl-count)) 0) | |
283 | (setq cl-i (cl-position cl-item cl-seq cl-start | |
284 | cl-end cl-from-end))) | |
285 | (if (= cl-i 0) (setq cl-seq (cdr cl-seq)) | |
286 | (let ((cl-tail (nthcdr (1- cl-i) cl-seq))) | |
287 | (setcdr cl-tail (cdr (cdr cl-tail))))) | |
288 | (setq cl-end cl-i)) | |
289 | cl-seq) | |
290 | (setq cl-end (- (or cl-end 8000000) cl-start)) | |
291 | (if (= cl-start 0) | |
292 | (progn | |
293 | (while (and cl-seq | |
294 | (> cl-end 0) | |
295 | (cl-check-test cl-item (car cl-seq)) | |
296 | (setq cl-end (1- cl-end) cl-seq (cdr cl-seq)) | |
297 | (> (setq cl-count (1- cl-count)) 0))) | |
298 | (setq cl-end (1- cl-end))) | |
299 | (setq cl-start (1- cl-start))) | |
300 | (if (and (> cl-count 0) (> cl-end 0)) | |
301 | (let ((cl-p (nthcdr cl-start cl-seq))) | |
302 | (while (and (cdr cl-p) (> cl-end 0)) | |
303 | (if (cl-check-test cl-item (car (cdr cl-p))) | |
304 | (progn | |
305 | (setcdr cl-p (cdr (cdr cl-p))) | |
306 | (if (= (setq cl-count (1- cl-count)) 0) | |
307 | (setq cl-end 1))) | |
308 | (setq cl-p (cdr cl-p))) | |
309 | (setq cl-end (1- cl-end))))) | |
310 | cl-seq) | |
311 | (apply 'remove* cl-item cl-seq cl-keys))))) | |
312 | ||
313 | (defun delete-if (cl-pred cl-list &rest cl-keys) | |
314 | "Remove all items satisfying PREDICATE in SEQ. | |
315 | This is a destructive function; it reuses the storage of SEQ whenever possible. | |
316 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 317 | (apply 'delete* nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
318 | |
319 | (defun delete-if-not (cl-pred cl-list &rest cl-keys) | |
320 | "Remove all items not satisfying PREDICATE in SEQ. | |
321 | This is a destructive function; it reuses the storage of SEQ whenever possible. | |
322 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 323 | (apply 'delete* nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 | 324 | |
fcd73769 RS |
325 | (defun remove-duplicates (cl-seq &rest cl-keys) |
326 | "Return a copy of SEQ with all duplicate elements removed. | |
327 | Keywords supported: :test :test-not :key :start :end :from-end" | |
328 | (cl-delete-duplicates cl-seq cl-keys t)) | |
329 | ||
330 | (defun delete-duplicates (cl-seq &rest cl-keys) | |
331 | "Remove all duplicate elements from SEQ (destructively). | |
332 | Keywords supported: :test :test-not :key :start :end :from-end" | |
333 | (cl-delete-duplicates cl-seq cl-keys nil)) | |
334 | ||
335 | (defun cl-delete-duplicates (cl-seq cl-keys cl-copy) | |
336 | (if (listp cl-seq) | |
337 | (cl-parsing-keywords (:test :test-not :key (:start 0) :end :from-end :if) | |
338 | () | |
339 | (if cl-from-end | |
340 | (let ((cl-p (nthcdr cl-start cl-seq)) cl-i) | |
341 | (setq cl-end (- (or cl-end (length cl-seq)) cl-start)) | |
342 | (while (> cl-end 1) | |
343 | (setq cl-i 0) | |
344 | (while (setq cl-i (cl-position (cl-check-key (car cl-p)) | |
345 | (cdr cl-p) cl-i (1- cl-end))) | |
346 | (if cl-copy (setq cl-seq (copy-sequence cl-seq) | |
347 | cl-p (nthcdr cl-start cl-seq) cl-copy nil)) | |
348 | (let ((cl-tail (nthcdr cl-i cl-p))) | |
349 | (setcdr cl-tail (cdr (cdr cl-tail)))) | |
350 | (setq cl-end (1- cl-end))) | |
351 | (setq cl-p (cdr cl-p) cl-end (1- cl-end) | |
352 | cl-start (1+ cl-start))) | |
353 | cl-seq) | |
354 | (setq cl-end (- (or cl-end (length cl-seq)) cl-start)) | |
355 | (while (and (cdr cl-seq) (= cl-start 0) (> cl-end 1) | |
356 | (cl-position (cl-check-key (car cl-seq)) | |
357 | (cdr cl-seq) 0 (1- cl-end))) | |
358 | (setq cl-seq (cdr cl-seq) cl-end (1- cl-end))) | |
359 | (let ((cl-p (if (> cl-start 0) (nthcdr (1- cl-start) cl-seq) | |
360 | (setq cl-end (1- cl-end) cl-start 1) cl-seq))) | |
361 | (while (and (cdr (cdr cl-p)) (> cl-end 1)) | |
362 | (if (cl-position (cl-check-key (car (cdr cl-p))) | |
363 | (cdr (cdr cl-p)) 0 (1- cl-end)) | |
364 | (progn | |
365 | (if cl-copy (setq cl-seq (copy-sequence cl-seq) | |
366 | cl-p (nthcdr (1- cl-start) cl-seq) | |
367 | cl-copy nil)) | |
368 | (setcdr cl-p (cdr (cdr cl-p)))) | |
369 | (setq cl-p (cdr cl-p))) | |
370 | (setq cl-end (1- cl-end) cl-start (1+ cl-start))) | |
371 | cl-seq))) | |
372 | (let ((cl-res (cl-delete-duplicates (append cl-seq nil) cl-keys nil))) | |
373 | (if (stringp cl-seq) (concat cl-res) (vconcat cl-res))))) | |
374 | ||
375 | (defun substitute (cl-new cl-old cl-seq &rest cl-keys) | |
376 | "Substitute NEW for OLD in SEQ. | |
377 | This is a non-destructive function; it makes a copy of SEQ if necessary | |
378 | to avoid corrupting the original SEQ. | |
379 | Keywords supported: :test :test-not :key :count :start :end :from-end" | |
380 | (cl-parsing-keywords (:test :test-not :key :if :if-not :count | |
381 | (:start 0) :end :from-end) () | |
382 | (if (or (eq cl-old cl-new) | |
383 | (<= (or cl-count (setq cl-from-end nil cl-count 8000000)) 0)) | |
384 | cl-seq | |
385 | (let ((cl-i (cl-position cl-old cl-seq cl-start cl-end))) | |
386 | (if (not cl-i) | |
387 | cl-seq | |
388 | (setq cl-seq (copy-sequence cl-seq)) | |
389 | (or cl-from-end | |
390 | (progn (cl-set-elt cl-seq cl-i cl-new) | |
391 | (setq cl-i (1+ cl-i) cl-count (1- cl-count)))) | |
64a4c526 DL |
392 | (apply 'nsubstitute cl-new cl-old cl-seq :count cl-count |
393 | :start cl-i cl-keys)))))) | |
fcd73769 RS |
394 | |
395 | (defun substitute-if (cl-new cl-pred cl-list &rest cl-keys) | |
396 | "Substitute NEW for all items satisfying PREDICATE in SEQ. | |
397 | This is a non-destructive function; it makes a copy of SEQ if necessary | |
398 | to avoid corrupting the original SEQ. | |
399 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 400 | (apply 'substitute cl-new nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
401 | |
402 | (defun substitute-if-not (cl-new cl-pred cl-list &rest cl-keys) | |
403 | "Substitute NEW for all items not satisfying PREDICATE in SEQ. | |
404 | This is a non-destructive function; it makes a copy of SEQ if necessary | |
405 | to avoid corrupting the original SEQ. | |
406 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 407 | (apply 'substitute cl-new nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
408 | |
409 | (defun nsubstitute (cl-new cl-old cl-seq &rest cl-keys) | |
410 | "Substitute NEW for OLD in SEQ. | |
411 | This is a destructive function; it reuses the storage of SEQ whenever possible. | |
412 | Keywords supported: :test :test-not :key :count :start :end :from-end" | |
413 | (cl-parsing-keywords (:test :test-not :key :if :if-not :count | |
414 | (:start 0) :end :from-end) () | |
415 | (or (eq cl-old cl-new) (<= (or cl-count (setq cl-count 8000000)) 0) | |
416 | (if (and (listp cl-seq) (or (not cl-from-end) (> cl-count 4000000))) | |
417 | (let ((cl-p (nthcdr cl-start cl-seq))) | |
418 | (setq cl-end (- (or cl-end 8000000) cl-start)) | |
419 | (while (and cl-p (> cl-end 0) (> cl-count 0)) | |
420 | (if (cl-check-test cl-old (car cl-p)) | |
421 | (progn | |
422 | (setcar cl-p cl-new) | |
423 | (setq cl-count (1- cl-count)))) | |
424 | (setq cl-p (cdr cl-p) cl-end (1- cl-end)))) | |
425 | (or cl-end (setq cl-end (length cl-seq))) | |
426 | (if cl-from-end | |
427 | (while (and (< cl-start cl-end) (> cl-count 0)) | |
428 | (setq cl-end (1- cl-end)) | |
429 | (if (cl-check-test cl-old (elt cl-seq cl-end)) | |
430 | (progn | |
431 | (cl-set-elt cl-seq cl-end cl-new) | |
432 | (setq cl-count (1- cl-count))))) | |
433 | (while (and (< cl-start cl-end) (> cl-count 0)) | |
434 | (if (cl-check-test cl-old (aref cl-seq cl-start)) | |
435 | (progn | |
436 | (aset cl-seq cl-start cl-new) | |
437 | (setq cl-count (1- cl-count)))) | |
438 | (setq cl-start (1+ cl-start)))))) | |
439 | cl-seq)) | |
440 | ||
441 | (defun nsubstitute-if (cl-new cl-pred cl-list &rest cl-keys) | |
442 | "Substitute NEW for all items satisfying PREDICATE in SEQ. | |
443 | This is a destructive function; it reuses the storage of SEQ whenever possible. | |
444 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 445 | (apply 'nsubstitute cl-new nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
446 | |
447 | (defun nsubstitute-if-not (cl-new cl-pred cl-list &rest cl-keys) | |
448 | "Substitute NEW for all items not satisfying PREDICATE in SEQ. | |
449 | This is a destructive function; it reuses the storage of SEQ whenever possible. | |
450 | Keywords supported: :key :count :start :end :from-end" | |
64a4c526 | 451 | (apply 'nsubstitute cl-new nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
452 | |
453 | (defun find (cl-item cl-seq &rest cl-keys) | |
454 | "Find the first occurrence of ITEM in LIST. | |
455 | Return the matching ITEM, or nil if not found. | |
456 | Keywords supported: :test :test-not :key :start :end :from-end" | |
457 | (let ((cl-pos (apply 'position cl-item cl-seq cl-keys))) | |
458 | (and cl-pos (elt cl-seq cl-pos)))) | |
459 | ||
460 | (defun find-if (cl-pred cl-list &rest cl-keys) | |
461 | "Find the first item satisfying PREDICATE in LIST. | |
462 | Return the matching ITEM, or nil if not found. | |
463 | Keywords supported: :key :start :end :from-end" | |
64a4c526 | 464 | (apply 'find nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
465 | |
466 | (defun find-if-not (cl-pred cl-list &rest cl-keys) | |
467 | "Find the first item not satisfying PREDICATE in LIST. | |
468 | Return the matching ITEM, or nil if not found. | |
469 | Keywords supported: :key :start :end :from-end" | |
64a4c526 | 470 | (apply 'find nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
471 | |
472 | (defun position (cl-item cl-seq &rest cl-keys) | |
473 | "Find the first occurrence of ITEM in LIST. | |
474 | Return the index of the matching item, or nil if not found. | |
475 | Keywords supported: :test :test-not :key :start :end :from-end" | |
476 | (cl-parsing-keywords (:test :test-not :key :if :if-not | |
477 | (:start 0) :end :from-end) () | |
478 | (cl-position cl-item cl-seq cl-start cl-end cl-from-end))) | |
479 | ||
480 | (defun cl-position (cl-item cl-seq cl-start &optional cl-end cl-from-end) | |
481 | (if (listp cl-seq) | |
482 | (let ((cl-p (nthcdr cl-start cl-seq))) | |
483 | (or cl-end (setq cl-end 8000000)) | |
484 | (let ((cl-res nil)) | |
485 | (while (and cl-p (< cl-start cl-end) (or (not cl-res) cl-from-end)) | |
486 | (if (cl-check-test cl-item (car cl-p)) | |
487 | (setq cl-res cl-start)) | |
488 | (setq cl-p (cdr cl-p) cl-start (1+ cl-start))) | |
489 | cl-res)) | |
490 | (or cl-end (setq cl-end (length cl-seq))) | |
491 | (if cl-from-end | |
492 | (progn | |
493 | (while (and (>= (setq cl-end (1- cl-end)) cl-start) | |
494 | (not (cl-check-test cl-item (aref cl-seq cl-end))))) | |
495 | (and (>= cl-end cl-start) cl-end)) | |
496 | (while (and (< cl-start cl-end) | |
497 | (not (cl-check-test cl-item (aref cl-seq cl-start)))) | |
498 | (setq cl-start (1+ cl-start))) | |
499 | (and (< cl-start cl-end) cl-start)))) | |
500 | ||
501 | (defun position-if (cl-pred cl-list &rest cl-keys) | |
502 | "Find the first item satisfying PREDICATE in LIST. | |
503 | Return the index of the matching item, or nil if not found. | |
504 | Keywords supported: :key :start :end :from-end" | |
64a4c526 | 505 | (apply 'position nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
506 | |
507 | (defun position-if-not (cl-pred cl-list &rest cl-keys) | |
508 | "Find the first item not satisfying PREDICATE in LIST. | |
509 | Return the index of the matching item, or nil if not found. | |
510 | Keywords supported: :key :start :end :from-end" | |
64a4c526 | 511 | (apply 'position nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
512 | |
513 | (defun count (cl-item cl-seq &rest cl-keys) | |
514 | "Count the number of occurrences of ITEM in LIST. | |
515 | Keywords supported: :test :test-not :key :start :end" | |
516 | (cl-parsing-keywords (:test :test-not :key :if :if-not (:start 0) :end) () | |
517 | (let ((cl-count 0) cl-x) | |
518 | (or cl-end (setq cl-end (length cl-seq))) | |
519 | (if (consp cl-seq) (setq cl-seq (nthcdr cl-start cl-seq))) | |
520 | (while (< cl-start cl-end) | |
521 | (setq cl-x (if (consp cl-seq) (cl-pop cl-seq) (aref cl-seq cl-start))) | |
522 | (if (cl-check-test cl-item cl-x) (setq cl-count (1+ cl-count))) | |
523 | (setq cl-start (1+ cl-start))) | |
524 | cl-count))) | |
525 | ||
526 | (defun count-if (cl-pred cl-list &rest cl-keys) | |
527 | "Count the number of items satisfying PREDICATE in LIST. | |
528 | Keywords supported: :key :start :end" | |
64a4c526 | 529 | (apply 'count nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
530 | |
531 | (defun count-if-not (cl-pred cl-list &rest cl-keys) | |
532 | "Count the number of items not satisfying PREDICATE in LIST. | |
533 | Keywords supported: :key :start :end" | |
64a4c526 | 534 | (apply 'count nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
535 | |
536 | (defun mismatch (cl-seq1 cl-seq2 &rest cl-keys) | |
537 | "Compare SEQ1 with SEQ2, return index of first mismatching element. | |
538 | Return nil if the sequences match. If one sequence is a prefix of the | |
d22f8da4 | 539 | other, the return value indicates the end of the shorter sequence. |
fcd73769 RS |
540 | Keywords supported: :test :test-not :key :start1 :end1 :start2 :end2 :from-end" |
541 | (cl-parsing-keywords (:test :test-not :key :from-end | |
542 | (:start1 0) :end1 (:start2 0) :end2) () | |
543 | (or cl-end1 (setq cl-end1 (length cl-seq1))) | |
544 | (or cl-end2 (setq cl-end2 (length cl-seq2))) | |
545 | (if cl-from-end | |
546 | (progn | |
547 | (while (and (< cl-start1 cl-end1) (< cl-start2 cl-end2) | |
548 | (cl-check-match (elt cl-seq1 (1- cl-end1)) | |
549 | (elt cl-seq2 (1- cl-end2)))) | |
550 | (setq cl-end1 (1- cl-end1) cl-end2 (1- cl-end2))) | |
551 | (and (or (< cl-start1 cl-end1) (< cl-start2 cl-end2)) | |
552 | (1- cl-end1))) | |
553 | (let ((cl-p1 (and (listp cl-seq1) (nthcdr cl-start1 cl-seq1))) | |
554 | (cl-p2 (and (listp cl-seq2) (nthcdr cl-start2 cl-seq2)))) | |
555 | (while (and (< cl-start1 cl-end1) (< cl-start2 cl-end2) | |
556 | (cl-check-match (if cl-p1 (car cl-p1) | |
557 | (aref cl-seq1 cl-start1)) | |
558 | (if cl-p2 (car cl-p2) | |
559 | (aref cl-seq2 cl-start2)))) | |
560 | (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2) | |
561 | cl-start1 (1+ cl-start1) cl-start2 (1+ cl-start2))) | |
562 | (and (or (< cl-start1 cl-end1) (< cl-start2 cl-end2)) | |
563 | cl-start1))))) | |
564 | ||
565 | (defun search (cl-seq1 cl-seq2 &rest cl-keys) | |
566 | "Search for SEQ1 as a subsequence of SEQ2. | |
567 | Return the index of the leftmost element of the first match found; | |
568 | return nil if there are no matches. | |
569 | Keywords supported: :test :test-not :key :start1 :end1 :start2 :end2 :from-end" | |
570 | (cl-parsing-keywords (:test :test-not :key :from-end | |
571 | (:start1 0) :end1 (:start2 0) :end2) () | |
572 | (or cl-end1 (setq cl-end1 (length cl-seq1))) | |
573 | (or cl-end2 (setq cl-end2 (length cl-seq2))) | |
574 | (if (>= cl-start1 cl-end1) | |
575 | (if cl-from-end cl-end2 cl-start2) | |
576 | (let* ((cl-len (- cl-end1 cl-start1)) | |
577 | (cl-first (cl-check-key (elt cl-seq1 cl-start1))) | |
578 | (cl-if nil) cl-pos) | |
579 | (setq cl-end2 (- cl-end2 (1- cl-len))) | |
580 | (while (and (< cl-start2 cl-end2) | |
581 | (setq cl-pos (cl-position cl-first cl-seq2 | |
582 | cl-start2 cl-end2 cl-from-end)) | |
583 | (apply 'mismatch cl-seq1 cl-seq2 | |
64a4c526 DL |
584 | :start1 (1+ cl-start1) :end1 cl-end1 |
585 | :start2 (1+ cl-pos) :end2 (+ cl-pos cl-len) | |
586 | :from-end nil cl-keys)) | |
fcd73769 RS |
587 | (if cl-from-end (setq cl-end2 cl-pos) (setq cl-start2 (1+ cl-pos)))) |
588 | (and (< cl-start2 cl-end2) cl-pos))))) | |
589 | ||
590 | (defun sort* (cl-seq cl-pred &rest cl-keys) | |
591 | "Sort the argument SEQUENCE according to PREDICATE. | |
592 | This is a destructive function; it reuses the storage of SEQUENCE if possible. | |
593 | Keywords supported: :key" | |
594 | (if (nlistp cl-seq) | |
595 | (replace cl-seq (apply 'sort* (append cl-seq nil) cl-pred cl-keys)) | |
596 | (cl-parsing-keywords (:key) () | |
597 | (if (memq cl-key '(nil identity)) | |
598 | (sort cl-seq cl-pred) | |
599 | (sort cl-seq (function (lambda (cl-x cl-y) | |
600 | (funcall cl-pred (funcall cl-key cl-x) | |
601 | (funcall cl-key cl-y))))))))) | |
602 | ||
603 | (defun stable-sort (cl-seq cl-pred &rest cl-keys) | |
604 | "Sort the argument SEQUENCE stably according to PREDICATE. | |
605 | This is a destructive function; it reuses the storage of SEQUENCE if possible. | |
606 | Keywords supported: :key" | |
607 | (apply 'sort* cl-seq cl-pred cl-keys)) | |
608 | ||
609 | (defun merge (cl-type cl-seq1 cl-seq2 cl-pred &rest cl-keys) | |
610 | "Destructively merge the two sequences to produce a new sequence. | |
611 | TYPE is the sequence type to return, SEQ1 and SEQ2 are the two | |
612 | argument sequences, and PRED is a `less-than' predicate on the elements. | |
613 | Keywords supported: :key" | |
614 | (or (listp cl-seq1) (setq cl-seq1 (append cl-seq1 nil))) | |
615 | (or (listp cl-seq2) (setq cl-seq2 (append cl-seq2 nil))) | |
616 | (cl-parsing-keywords (:key) () | |
617 | (let ((cl-res nil)) | |
618 | (while (and cl-seq1 cl-seq2) | |
619 | (if (funcall cl-pred (cl-check-key (car cl-seq2)) | |
620 | (cl-check-key (car cl-seq1))) | |
621 | (cl-push (cl-pop cl-seq2) cl-res) | |
622 | (cl-push (cl-pop cl-seq1) cl-res))) | |
623 | (coerce (nconc (nreverse cl-res) cl-seq1 cl-seq2) cl-type)))) | |
624 | ||
625 | ;;; See compiler macro in cl-macs.el | |
626 | (defun member* (cl-item cl-list &rest cl-keys) | |
627 | "Find the first occurrence of ITEM in LIST. | |
628 | Return the sublist of LIST whose car is ITEM. | |
629 | Keywords supported: :test :test-not :key" | |
630 | (if cl-keys | |
631 | (cl-parsing-keywords (:test :test-not :key :if :if-not) () | |
632 | (while (and cl-list (not (cl-check-test cl-item (car cl-list)))) | |
633 | (setq cl-list (cdr cl-list))) | |
634 | cl-list) | |
635 | (if (and (numberp cl-item) (not (integerp cl-item))) | |
636 | (member cl-item cl-list) | |
637 | (memq cl-item cl-list)))) | |
638 | ||
639 | (defun member-if (cl-pred cl-list &rest cl-keys) | |
640 | "Find the first item satisfying PREDICATE in LIST. | |
641 | Return the sublist of LIST whose car matches. | |
642 | Keywords supported: :key" | |
64a4c526 | 643 | (apply 'member* nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
644 | |
645 | (defun member-if-not (cl-pred cl-list &rest cl-keys) | |
646 | "Find the first item not satisfying PREDICATE in LIST. | |
647 | Return the sublist of LIST whose car matches. | |
648 | Keywords supported: :key" | |
64a4c526 | 649 | (apply 'member* nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
650 | |
651 | (defun cl-adjoin (cl-item cl-list &rest cl-keys) | |
652 | (if (cl-parsing-keywords (:key) t | |
653 | (apply 'member* (cl-check-key cl-item) cl-list cl-keys)) | |
654 | cl-list | |
655 | (cons cl-item cl-list))) | |
656 | ||
657 | ;;; See compiler macro in cl-macs.el | |
658 | (defun assoc* (cl-item cl-alist &rest cl-keys) | |
659 | "Find the first item whose car matches ITEM in LIST. | |
660 | Keywords supported: :test :test-not :key" | |
661 | (if cl-keys | |
662 | (cl-parsing-keywords (:test :test-not :key :if :if-not) () | |
663 | (while (and cl-alist | |
664 | (or (not (consp (car cl-alist))) | |
665 | (not (cl-check-test cl-item (car (car cl-alist)))))) | |
666 | (setq cl-alist (cdr cl-alist))) | |
667 | (and cl-alist (car cl-alist))) | |
668 | (if (and (numberp cl-item) (not (integerp cl-item))) | |
669 | (assoc cl-item cl-alist) | |
670 | (assq cl-item cl-alist)))) | |
671 | ||
672 | (defun assoc-if (cl-pred cl-list &rest cl-keys) | |
673 | "Find the first item whose car satisfies PREDICATE in LIST. | |
674 | Keywords supported: :key" | |
64a4c526 | 675 | (apply 'assoc* nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
676 | |
677 | (defun assoc-if-not (cl-pred cl-list &rest cl-keys) | |
678 | "Find the first item whose car does not satisfy PREDICATE in LIST. | |
679 | Keywords supported: :key" | |
64a4c526 | 680 | (apply 'assoc* nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
681 | |
682 | (defun rassoc* (cl-item cl-alist &rest cl-keys) | |
683 | "Find the first item whose cdr matches ITEM in LIST. | |
684 | Keywords supported: :test :test-not :key" | |
685 | (if (or cl-keys (numberp cl-item)) | |
686 | (cl-parsing-keywords (:test :test-not :key :if :if-not) () | |
687 | (while (and cl-alist | |
688 | (or (not (consp (car cl-alist))) | |
689 | (not (cl-check-test cl-item (cdr (car cl-alist)))))) | |
690 | (setq cl-alist (cdr cl-alist))) | |
691 | (and cl-alist (car cl-alist))) | |
692 | (rassq cl-item cl-alist))) | |
693 | ||
fcd73769 RS |
694 | (defun rassoc-if (cl-pred cl-list &rest cl-keys) |
695 | "Find the first item whose cdr satisfies PREDICATE in LIST. | |
696 | Keywords supported: :key" | |
64a4c526 | 697 | (apply 'rassoc* nil cl-list :if cl-pred cl-keys)) |
fcd73769 RS |
698 | |
699 | (defun rassoc-if-not (cl-pred cl-list &rest cl-keys) | |
700 | "Find the first item whose cdr does not satisfy PREDICATE in LIST. | |
701 | Keywords supported: :key" | |
64a4c526 | 702 | (apply 'rassoc* nil cl-list :if-not cl-pred cl-keys)) |
fcd73769 RS |
703 | |
704 | (defun union (cl-list1 cl-list2 &rest cl-keys) | |
705 | "Combine LIST1 and LIST2 using a set-union operation. | |
706 | The result list contains all items that appear in either LIST1 or LIST2. | |
707 | This is a non-destructive function; it makes a copy of the data if necessary | |
708 | to avoid corrupting the original LIST1 and LIST2. | |
709 | Keywords supported: :test :test-not :key" | |
710 | (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1) | |
711 | ((equal cl-list1 cl-list2) cl-list1) | |
712 | (t | |
713 | (or (>= (length cl-list1) (length cl-list2)) | |
714 | (setq cl-list1 (prog1 cl-list2 (setq cl-list2 cl-list1)))) | |
715 | (while cl-list2 | |
716 | (if (or cl-keys (numberp (car cl-list2))) | |
717 | (setq cl-list1 (apply 'adjoin (car cl-list2) cl-list1 cl-keys)) | |
718 | (or (memq (car cl-list2) cl-list1) | |
719 | (cl-push (car cl-list2) cl-list1))) | |
720 | (cl-pop cl-list2)) | |
721 | cl-list1))) | |
722 | ||
723 | (defun nunion (cl-list1 cl-list2 &rest cl-keys) | |
724 | "Combine LIST1 and LIST2 using a set-union operation. | |
725 | The result list contains all items that appear in either LIST1 or LIST2. | |
726 | This is a destructive function; it reuses the storage of LIST1 and LIST2 | |
727 | whenever possible. | |
728 | Keywords supported: :test :test-not :key" | |
729 | (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1) | |
730 | (t (apply 'union cl-list1 cl-list2 cl-keys)))) | |
731 | ||
732 | (defun intersection (cl-list1 cl-list2 &rest cl-keys) | |
733 | "Combine LIST1 and LIST2 using a set-intersection operation. | |
734 | The result list contains all items that appear in both LIST1 and LIST2. | |
735 | This is a non-destructive function; it makes a copy of the data if necessary | |
736 | to avoid corrupting the original LIST1 and LIST2. | |
737 | Keywords supported: :test :test-not :key" | |
738 | (and cl-list1 cl-list2 | |
739 | (if (equal cl-list1 cl-list2) cl-list1 | |
740 | (cl-parsing-keywords (:key) (:test :test-not) | |
741 | (let ((cl-res nil)) | |
742 | (or (>= (length cl-list1) (length cl-list2)) | |
743 | (setq cl-list1 (prog1 cl-list2 (setq cl-list2 cl-list1)))) | |
744 | (while cl-list2 | |
745 | (if (if (or cl-keys (numberp (car cl-list2))) | |
746 | (apply 'member* (cl-check-key (car cl-list2)) | |
747 | cl-list1 cl-keys) | |
748 | (memq (car cl-list2) cl-list1)) | |
749 | (cl-push (car cl-list2) cl-res)) | |
750 | (cl-pop cl-list2)) | |
751 | cl-res))))) | |
752 | ||
753 | (defun nintersection (cl-list1 cl-list2 &rest cl-keys) | |
754 | "Combine LIST1 and LIST2 using a set-intersection operation. | |
755 | The result list contains all items that appear in both LIST1 and LIST2. | |
756 | This is a destructive function; it reuses the storage of LIST1 and LIST2 | |
757 | whenever possible. | |
758 | Keywords supported: :test :test-not :key" | |
759 | (and cl-list1 cl-list2 (apply 'intersection cl-list1 cl-list2 cl-keys))) | |
760 | ||
761 | (defun set-difference (cl-list1 cl-list2 &rest cl-keys) | |
762 | "Combine LIST1 and LIST2 using a set-difference operation. | |
763 | The result list contains all items that appear in LIST1 but not LIST2. | |
764 | This is a non-destructive function; it makes a copy of the data if necessary | |
765 | to avoid corrupting the original LIST1 and LIST2. | |
766 | Keywords supported: :test :test-not :key" | |
767 | (if (or (null cl-list1) (null cl-list2)) cl-list1 | |
768 | (cl-parsing-keywords (:key) (:test :test-not) | |
769 | (let ((cl-res nil)) | |
770 | (while cl-list1 | |
771 | (or (if (or cl-keys (numberp (car cl-list1))) | |
772 | (apply 'member* (cl-check-key (car cl-list1)) | |
773 | cl-list2 cl-keys) | |
774 | (memq (car cl-list1) cl-list2)) | |
775 | (cl-push (car cl-list1) cl-res)) | |
776 | (cl-pop cl-list1)) | |
777 | cl-res)))) | |
778 | ||
779 | (defun nset-difference (cl-list1 cl-list2 &rest cl-keys) | |
780 | "Combine LIST1 and LIST2 using a set-difference operation. | |
781 | The result list contains all items that appear in LIST1 but not LIST2. | |
782 | This is a destructive function; it reuses the storage of LIST1 and LIST2 | |
783 | whenever possible. | |
784 | Keywords supported: :test :test-not :key" | |
785 | (if (or (null cl-list1) (null cl-list2)) cl-list1 | |
786 | (apply 'set-difference cl-list1 cl-list2 cl-keys))) | |
787 | ||
788 | (defun set-exclusive-or (cl-list1 cl-list2 &rest cl-keys) | |
789 | "Combine LIST1 and LIST2 using a set-exclusive-or operation. | |
790 | The result list contains all items that appear in exactly one of LIST1, LIST2. | |
791 | This is a non-destructive function; it makes a copy of the data if necessary | |
792 | to avoid corrupting the original LIST1 and LIST2. | |
793 | Keywords supported: :test :test-not :key" | |
794 | (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1) | |
795 | ((equal cl-list1 cl-list2) nil) | |
796 | (t (append (apply 'set-difference cl-list1 cl-list2 cl-keys) | |
797 | (apply 'set-difference cl-list2 cl-list1 cl-keys))))) | |
798 | ||
799 | (defun nset-exclusive-or (cl-list1 cl-list2 &rest cl-keys) | |
800 | "Combine LIST1 and LIST2 using a set-exclusive-or operation. | |
801 | The result list contains all items that appear in exactly one of LIST1, LIST2. | |
802 | This is a destructive function; it reuses the storage of LIST1 and LIST2 | |
803 | whenever possible. | |
804 | Keywords supported: :test :test-not :key" | |
805 | (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1) | |
806 | ((equal cl-list1 cl-list2) nil) | |
807 | (t (nconc (apply 'nset-difference cl-list1 cl-list2 cl-keys) | |
808 | (apply 'nset-difference cl-list2 cl-list1 cl-keys))))) | |
809 | ||
810 | (defun subsetp (cl-list1 cl-list2 &rest cl-keys) | |
811 | "True if LIST1 is a subset of LIST2. | |
812 | I.e., if every element of LIST1 also appears in LIST2. | |
813 | Keywords supported: :test :test-not :key" | |
814 | (cond ((null cl-list1) t) ((null cl-list2) nil) | |
815 | ((equal cl-list1 cl-list2) t) | |
816 | (t (cl-parsing-keywords (:key) (:test :test-not) | |
817 | (while (and cl-list1 | |
818 | (apply 'member* (cl-check-key (car cl-list1)) | |
819 | cl-list2 cl-keys)) | |
820 | (cl-pop cl-list1)) | |
821 | (null cl-list1))))) | |
822 | ||
823 | (defun subst-if (cl-new cl-pred cl-tree &rest cl-keys) | |
824 | "Substitute NEW for elements matching PREDICATE in TREE (non-destructively). | |
825 | Return a copy of TREE with all matching elements replaced by NEW. | |
826 | Keywords supported: :key" | |
64a4c526 | 827 | (apply 'sublis (list (cons nil cl-new)) cl-tree :if cl-pred cl-keys)) |
fcd73769 RS |
828 | |
829 | (defun subst-if-not (cl-new cl-pred cl-tree &rest cl-keys) | |
830 | "Substitute NEW for elts not matching PREDICATE in TREE (non-destructively). | |
831 | Return a copy of TREE with all non-matching elements replaced by NEW. | |
832 | Keywords supported: :key" | |
64a4c526 | 833 | (apply 'sublis (list (cons nil cl-new)) cl-tree :if-not cl-pred cl-keys)) |
fcd73769 RS |
834 | |
835 | (defun nsubst (cl-new cl-old cl-tree &rest cl-keys) | |
836 | "Substitute NEW for OLD everywhere in TREE (destructively). | |
837 | Any element of TREE which is `eql' to OLD is changed to NEW (via a call | |
838 | to `setcar'). | |
839 | Keywords supported: :test :test-not :key" | |
840 | (apply 'nsublis (list (cons cl-old cl-new)) cl-tree cl-keys)) | |
841 | ||
842 | (defun nsubst-if (cl-new cl-pred cl-tree &rest cl-keys) | |
843 | "Substitute NEW for elements matching PREDICATE in TREE (destructively). | |
844 | Any element of TREE which matches is changed to NEW (via a call to `setcar'). | |
845 | Keywords supported: :key" | |
64a4c526 | 846 | (apply 'nsublis (list (cons nil cl-new)) cl-tree :if cl-pred cl-keys)) |
fcd73769 RS |
847 | |
848 | (defun nsubst-if-not (cl-new cl-pred cl-tree &rest cl-keys) | |
849 | "Substitute NEW for elements not matching PREDICATE in TREE (destructively). | |
850 | Any element of TREE which matches is changed to NEW (via a call to `setcar'). | |
851 | Keywords supported: :key" | |
64a4c526 | 852 | (apply 'nsublis (list (cons nil cl-new)) cl-tree :if-not cl-pred cl-keys)) |
fcd73769 RS |
853 | |
854 | (defun sublis (cl-alist cl-tree &rest cl-keys) | |
855 | "Perform substitutions indicated by ALIST in TREE (non-destructively). | |
856 | Return a copy of TREE with all matching elements replaced. | |
857 | Keywords supported: :test :test-not :key" | |
858 | (cl-parsing-keywords (:test :test-not :key :if :if-not) () | |
859 | (cl-sublis-rec cl-tree))) | |
860 | ||
861 | (defvar cl-alist) | |
862 | (defun cl-sublis-rec (cl-tree) ; uses cl-alist/key/test*/if* | |
863 | (let ((cl-temp (cl-check-key cl-tree)) (cl-p cl-alist)) | |
864 | (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp))) | |
865 | (setq cl-p (cdr cl-p))) | |
866 | (if cl-p (cdr (car cl-p)) | |
867 | (if (consp cl-tree) | |
868 | (let ((cl-a (cl-sublis-rec (car cl-tree))) | |
869 | (cl-d (cl-sublis-rec (cdr cl-tree)))) | |
870 | (if (and (eq cl-a (car cl-tree)) (eq cl-d (cdr cl-tree))) | |
871 | cl-tree | |
872 | (cons cl-a cl-d))) | |
873 | cl-tree)))) | |
874 | ||
875 | (defun nsublis (cl-alist cl-tree &rest cl-keys) | |
876 | "Perform substitutions indicated by ALIST in TREE (destructively). | |
877 | Any matching element of TREE is changed via a call to `setcar'. | |
878 | Keywords supported: :test :test-not :key" | |
879 | (cl-parsing-keywords (:test :test-not :key :if :if-not) () | |
880 | (let ((cl-hold (list cl-tree))) | |
881 | (cl-nsublis-rec cl-hold) | |
882 | (car cl-hold)))) | |
883 | ||
884 | (defun cl-nsublis-rec (cl-tree) ; uses cl-alist/temp/p/key/test*/if* | |
885 | (while (consp cl-tree) | |
886 | (let ((cl-temp (cl-check-key (car cl-tree))) (cl-p cl-alist)) | |
887 | (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp))) | |
888 | (setq cl-p (cdr cl-p))) | |
889 | (if cl-p (setcar cl-tree (cdr (car cl-p))) | |
890 | (if (consp (car cl-tree)) (cl-nsublis-rec (car cl-tree)))) | |
891 | (setq cl-temp (cl-check-key (cdr cl-tree)) cl-p cl-alist) | |
892 | (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp))) | |
893 | (setq cl-p (cdr cl-p))) | |
894 | (if cl-p | |
895 | (progn (setcdr cl-tree (cdr (car cl-p))) (setq cl-tree nil)) | |
896 | (setq cl-tree (cdr cl-tree)))))) | |
897 | ||
898 | (defun tree-equal (cl-x cl-y &rest cl-keys) | |
899 | "T if trees X and Y have `eql' leaves. | |
900 | Atoms are compared by `eql'; cons cells are compared recursively. | |
901 | Keywords supported: :test :test-not :key" | |
902 | (cl-parsing-keywords (:test :test-not :key) () | |
903 | (cl-tree-equal-rec cl-x cl-y))) | |
904 | ||
905 | (defun cl-tree-equal-rec (cl-x cl-y) | |
906 | (while (and (consp cl-x) (consp cl-y) | |
907 | (cl-tree-equal-rec (car cl-x) (car cl-y))) | |
908 | (setq cl-x (cdr cl-x) cl-y (cdr cl-y))) | |
909 | (and (not (consp cl-x)) (not (consp cl-y)) (cl-check-match cl-x cl-y))) | |
910 | ||
911 | ||
912 | (run-hooks 'cl-seq-load-hook) | |
913 | ||
914 | ;;; cl-seq.el ends here |