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- ;;; cl-seq.el --- Common Lisp extensions for GNU Emacs Lisp (part three)
-
- ;; Copyright (C) 1993 Free Software Foundation, Inc.
-
- ;; Author: Dave Gillespie <daveg@synaptics.com>
- ;; Version: 2.02
- ;; Keywords: extensions
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;; These are extensions to Emacs Lisp that provide a degree of
- ;; Common Lisp compatibility, beyond what is already built-in
- ;; in Emacs Lisp.
- ;;
- ;; This package was written by Dave Gillespie; it is a complete
- ;; rewrite of Cesar Quiroz's original cl.el package of December 1986.
- ;;
- ;; This package works with Emacs 18, Emacs 19, and Lucid Emacs 19.
- ;;
- ;; Bug reports, comments, and suggestions are welcome!
-
- ;; This file contains the Common Lisp sequence and list functions
- ;; which take keyword arguments.
-
- ;; See cl.el for Change Log.
-
-
- ;;; Code:
-
- (or (memq 'cl-19 features)
- (error "Tried to load `cl-seq' before `cl'!"))
-
-
- ;;; We define these here so that this file can compile without having
- ;;; loaded the cl.el file already.
-
- (defmacro cl-push (x place) (list 'setq place (list 'cons x place)))
- (defmacro cl-pop (place)
- (list 'car (list 'prog1 place (list 'setq place (list 'cdr place)))))
-
-
- ;;; Keyword parsing. This is special-cased here so that we can compile
- ;;; this file independent from cl-macs.
-
- (defmacro cl-parsing-keywords (kwords other-keys &rest body)
- (cons
- 'let*
- (cons (mapcar
- (function
- (lambda (x)
- (let* ((var (if (consp x) (car x) x))
- (mem (list 'car (list 'cdr (list 'memq (list 'quote var)
- 'cl-keys)))))
- (if (eq var ':test-not)
- (setq mem (list 'and mem (list 'setq 'cl-test mem) t)))
- (if (eq var ':if-not)
- (setq mem (list 'and mem (list 'setq 'cl-if mem) t)))
- (list (intern
- (format "cl-%s" (substring (symbol-name var) 1)))
- (if (consp x) (list 'or mem (car (cdr x))) mem)))))
- kwords)
- (append
- (and (not (eq other-keys t))
- (list
- (list 'let '((cl-keys-temp cl-keys))
- (list 'while 'cl-keys-temp
- (list 'or (list 'memq '(car cl-keys-temp)
- (list 'quote
- (mapcar
- (function
- (lambda (x)
- (if (consp x)
- (car x) x)))
- (append kwords
- other-keys))))
- '(car (cdr (memq (quote :allow-other-keys)
- cl-keys)))
- '(error "Bad keyword argument %s"
- (car cl-keys-temp)))
- '(setq cl-keys-temp (cdr (cdr cl-keys-temp)))))))
- body))))
- (put 'cl-parsing-keywords 'lisp-indent-function 2)
- (put 'cl-parsing-keywords 'edebug-form-spec '(sexp sexp &rest form))
-
- (defmacro cl-check-key (x)
- (list 'if 'cl-key (list 'funcall 'cl-key x) x))
-
- (defmacro cl-check-test-nokey (item x)
- (list 'cond
- (list 'cl-test
- (list 'eq (list 'not (list 'funcall 'cl-test item x))
- 'cl-test-not))
- (list 'cl-if
- (list 'eq (list 'not (list 'funcall 'cl-if x)) 'cl-if-not))
- (list 't (list 'if (list 'numberp item)
- (list 'equal item x) (list 'eq item x)))))
-
- (defmacro cl-check-test (item x)
- (list 'cl-check-test-nokey item (list 'cl-check-key x)))
-
- (defmacro cl-check-match (x y)
- (setq x (list 'cl-check-key x) y (list 'cl-check-key y))
- (list 'if 'cl-test
- (list 'eq (list 'not (list 'funcall 'cl-test x y)) 'cl-test-not)
- (list 'if (list 'numberp x)
- (list 'equal x y) (list 'eq x y))))
-
- (put 'cl-check-key 'edebug-form-spec 'edebug-forms)
- (put 'cl-check-test 'edebug-form-spec 'edebug-forms)
- (put 'cl-check-test-nokey 'edebug-form-spec 'edebug-forms)
- (put 'cl-check-match 'edebug-form-spec 'edebug-forms)
-
- (defvar cl-test) (defvar cl-test-not)
- (defvar cl-if) (defvar cl-if-not)
- (defvar cl-key)
-
-
- (defun reduce (cl-func cl-seq &rest cl-keys)
- "Reduce two-argument FUNCTION across SEQUENCE.
- Keywords supported: :start :end :from-end :initial-value :key"
- (cl-parsing-keywords (:from-end (:start 0) :end :initial-value :key) ()
- (or (listp cl-seq) (setq cl-seq (append cl-seq nil)))
- (setq cl-seq (subseq cl-seq cl-start cl-end))
- (if cl-from-end (setq cl-seq (nreverse cl-seq)))
- (let ((cl-accum (cond ((memq ':initial-value cl-keys) cl-initial-value)
- (cl-seq (cl-check-key (cl-pop cl-seq)))
- (t (funcall cl-func)))))
- (if cl-from-end
- (while cl-seq
- (setq cl-accum (funcall cl-func (cl-check-key (cl-pop cl-seq))
- cl-accum)))
- (while cl-seq
- (setq cl-accum (funcall cl-func cl-accum
- (cl-check-key (cl-pop cl-seq))))))
- cl-accum)))
-
- (defun fill (seq item &rest cl-keys)
- "Fill the elements of SEQ with ITEM.
- Keywords supported: :start :end"
- (cl-parsing-keywords ((:start 0) :end) ()
- (if (listp seq)
- (let ((p (nthcdr cl-start seq))
- (n (if cl-end (- cl-end cl-start) 8000000)))
- (while (and p (>= (setq n (1- n)) 0))
- (setcar p item)
- (setq p (cdr p))))
- (or cl-end (setq cl-end (length seq)))
- (if (and (= cl-start 0) (= cl-end (length seq)))
- (fillarray seq item)
- (while (< cl-start cl-end)
- (aset seq cl-start item)
- (setq cl-start (1+ cl-start)))))
- seq))
-
- (defun replace (cl-seq1 cl-seq2 &rest cl-keys)
- "Replace the elements of SEQ1 with the elements of SEQ2.
- SEQ1 is destructively modified, then returned.
- Keywords supported: :start1 :end1 :start2 :end2"
- (cl-parsing-keywords ((:start1 0) :end1 (:start2 0) :end2) ()
- (if (and (eq cl-seq1 cl-seq2) (<= cl-start2 cl-start1))
- (or (= cl-start1 cl-start2)
- (let* ((cl-len (length cl-seq1))
- (cl-n (min (- (or cl-end1 cl-len) cl-start1)
- (- (or cl-end2 cl-len) cl-start2))))
- (while (>= (setq cl-n (1- cl-n)) 0)
- (cl-set-elt cl-seq1 (+ cl-start1 cl-n)
- (elt cl-seq2 (+ cl-start2 cl-n))))))
- (if (listp cl-seq1)
- (let ((cl-p1 (nthcdr cl-start1 cl-seq1))
- (cl-n1 (if cl-end1 (- cl-end1 cl-start1) 4000000)))
- (if (listp cl-seq2)
- (let ((cl-p2 (nthcdr cl-start2 cl-seq2))
- (cl-n (min cl-n1
- (if cl-end2 (- cl-end2 cl-start2) 4000000))))
- (while (and cl-p1 cl-p2 (>= (setq cl-n (1- cl-n)) 0))
- (setcar cl-p1 (car cl-p2))
- (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2))))
- (setq cl-end2 (min (or cl-end2 (length cl-seq2))
- (+ cl-start2 cl-n1)))
- (while (and cl-p1 (< cl-start2 cl-end2))
- (setcar cl-p1 (aref cl-seq2 cl-start2))
- (setq cl-p1 (cdr cl-p1) cl-start2 (1+ cl-start2)))))
- (setq cl-end1 (min (or cl-end1 (length cl-seq1))
- (+ cl-start1 (- (or cl-end2 (length cl-seq2))
- cl-start2))))
- (if (listp cl-seq2)
- (let ((cl-p2 (nthcdr cl-start2 cl-seq2)))
- (while (< cl-start1 cl-end1)
- (aset cl-seq1 cl-start1 (car cl-p2))
- (setq cl-p2 (cdr cl-p2) cl-start1 (1+ cl-start1))))
- (while (< cl-start1 cl-end1)
- (aset cl-seq1 cl-start1 (aref cl-seq2 cl-start2))
- (setq cl-start2 (1+ cl-start2) cl-start1 (1+ cl-start1))))))
- cl-seq1))
-
- (defun remove* (cl-item cl-seq &rest cl-keys)
- "Remove all occurrences of ITEM in SEQ.
- This is a non-destructive function; it makes a copy of SEQ if necessary
- to avoid corrupting the original SEQ.
- Keywords supported: :test :test-not :key :count :start :end :from-end"
- (cl-parsing-keywords (:test :test-not :key :if :if-not :count :from-end
- (:start 0) :end) ()
- (if (<= (or cl-count (setq cl-count 8000000)) 0)
- cl-seq
- (if (or (nlistp cl-seq) (and cl-from-end (< cl-count 4000000)))
- (let ((cl-i (cl-position cl-item cl-seq cl-start cl-end
- cl-from-end)))
- (if cl-i
- (let ((cl-res (apply 'delete* cl-item (append cl-seq nil)
- (append (if cl-from-end
- (list ':end (1+ cl-i))
- (list ':start cl-i))
- cl-keys))))
- (if (listp cl-seq) cl-res
- (if (stringp cl-seq) (concat cl-res) (vconcat cl-res))))
- cl-seq))
- (setq cl-end (- (or cl-end 8000000) cl-start))
- (if (= cl-start 0)
- (while (and cl-seq (> cl-end 0)
- (cl-check-test cl-item (car cl-seq))
- (setq cl-end (1- cl-end) cl-seq (cdr cl-seq))
- (> (setq cl-count (1- cl-count)) 0))))
- (if (and (> cl-count 0) (> cl-end 0))
- (let ((cl-p (if (> cl-start 0) (nthcdr cl-start cl-seq)
- (setq cl-end (1- cl-end)) (cdr cl-seq))))
- (while (and cl-p (> cl-end 0)
- (not (cl-check-test cl-item (car cl-p))))
- (setq cl-p (cdr cl-p) cl-end (1- cl-end)))
- (if (and cl-p (> cl-end 0))
- (nconc (ldiff cl-seq cl-p)
- (if (= cl-count 1) (cdr cl-p)
- (and (cdr cl-p)
- (apply 'delete* cl-item
- (copy-sequence (cdr cl-p))
- ':start 0 ':end (1- cl-end)
- ':count (1- cl-count) cl-keys))))
- cl-seq))
- cl-seq)))))
-
- (defun remove-if (cl-pred cl-list &rest cl-keys)
- "Remove all items satisfying PREDICATE in SEQ.
- This is a non-destructive function; it makes a copy of SEQ if necessary
- to avoid corrupting the original SEQ.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'remove* nil cl-list ':if cl-pred cl-keys))
-
- (defun remove-if-not (cl-pred cl-list &rest cl-keys)
- "Remove all items not satisfying PREDICATE in SEQ.
- This is a non-destructive function; it makes a copy of SEQ if necessary
- to avoid corrupting the original SEQ.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'remove* nil cl-list ':if-not cl-pred cl-keys))
-
- (defun delete* (cl-item cl-seq &rest cl-keys)
- "Remove all occurrences of ITEM in SEQ.
- This is a destructive function; it reuses the storage of SEQ whenever possible.
- Keywords supported: :test :test-not :key :count :start :end :from-end"
- (cl-parsing-keywords (:test :test-not :key :if :if-not :count :from-end
- (:start 0) :end) ()
- (if (<= (or cl-count (setq cl-count 8000000)) 0)
- cl-seq
- (if (listp cl-seq)
- (if (and cl-from-end (< cl-count 4000000))
- (let (cl-i)
- (while (and (>= (setq cl-count (1- cl-count)) 0)
- (setq cl-i (cl-position cl-item cl-seq cl-start
- cl-end cl-from-end)))
- (if (= cl-i 0) (setq cl-seq (cdr cl-seq))
- (let ((cl-tail (nthcdr (1- cl-i) cl-seq)))
- (setcdr cl-tail (cdr (cdr cl-tail)))))
- (setq cl-end cl-i))
- cl-seq)
- (setq cl-end (- (or cl-end 8000000) cl-start))
- (if (= cl-start 0)
- (progn
- (while (and cl-seq
- (> cl-end 0)
- (cl-check-test cl-item (car cl-seq))
- (setq cl-end (1- cl-end) cl-seq (cdr cl-seq))
- (> (setq cl-count (1- cl-count)) 0)))
- (setq cl-end (1- cl-end)))
- (setq cl-start (1- cl-start)))
- (if (and (> cl-count 0) (> cl-end 0))
- (let ((cl-p (nthcdr cl-start cl-seq)))
- (while (and (cdr cl-p) (> cl-end 0))
- (if (cl-check-test cl-item (car (cdr cl-p)))
- (progn
- (setcdr cl-p (cdr (cdr cl-p)))
- (if (= (setq cl-count (1- cl-count)) 0)
- (setq cl-end 1)))
- (setq cl-p (cdr cl-p)))
- (setq cl-end (1- cl-end)))))
- cl-seq)
- (apply 'remove* cl-item cl-seq cl-keys)))))
-
- (defun delete-if (cl-pred cl-list &rest cl-keys)
- "Remove all items satisfying PREDICATE in SEQ.
- This is a destructive function; it reuses the storage of SEQ whenever possible.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'delete* nil cl-list ':if cl-pred cl-keys))
-
- (defun delete-if-not (cl-pred cl-list &rest cl-keys)
- "Remove all items not satisfying PREDICATE in SEQ.
- This is a destructive function; it reuses the storage of SEQ whenever possible.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'delete* nil cl-list ':if-not cl-pred cl-keys))
-
- (or (and (fboundp 'delete) (subrp (symbol-function 'delete)))
- (defalias 'delete (function (lambda (x y) (delete* x y ':test 'equal)))))
- (defun remove (x y) (remove* x y ':test 'equal))
- (defun remq (x y) (if (memq x y) (delq x (copy-list y)) y))
-
- (defun remove-duplicates (cl-seq &rest cl-keys)
- "Return a copy of SEQ with all duplicate elements removed.
- Keywords supported: :test :test-not :key :start :end :from-end"
- (cl-delete-duplicates cl-seq cl-keys t))
-
- (defun delete-duplicates (cl-seq &rest cl-keys)
- "Remove all duplicate elements from SEQ (destructively).
- Keywords supported: :test :test-not :key :start :end :from-end"
- (cl-delete-duplicates cl-seq cl-keys nil))
-
- (defun cl-delete-duplicates (cl-seq cl-keys cl-copy)
- (if (listp cl-seq)
- (cl-parsing-keywords (:test :test-not :key (:start 0) :end :from-end :if)
- ()
- (if cl-from-end
- (let ((cl-p (nthcdr cl-start cl-seq)) cl-i)
- (setq cl-end (- (or cl-end (length cl-seq)) cl-start))
- (while (> cl-end 1)
- (setq cl-i 0)
- (while (setq cl-i (cl-position (cl-check-key (car cl-p))
- (cdr cl-p) cl-i (1- cl-end)))
- (if cl-copy (setq cl-seq (copy-sequence cl-seq)
- cl-p (nthcdr cl-start cl-seq) cl-copy nil))
- (let ((cl-tail (nthcdr cl-i cl-p)))
- (setcdr cl-tail (cdr (cdr cl-tail))))
- (setq cl-end (1- cl-end)))
- (setq cl-p (cdr cl-p) cl-end (1- cl-end)
- cl-start (1+ cl-start)))
- cl-seq)
- (setq cl-end (- (or cl-end (length cl-seq)) cl-start))
- (while (and (cdr cl-seq) (= cl-start 0) (> cl-end 1)
- (cl-position (cl-check-key (car cl-seq))
- (cdr cl-seq) 0 (1- cl-end)))
- (setq cl-seq (cdr cl-seq) cl-end (1- cl-end)))
- (let ((cl-p (if (> cl-start 0) (nthcdr (1- cl-start) cl-seq)
- (setq cl-end (1- cl-end) cl-start 1) cl-seq)))
- (while (and (cdr (cdr cl-p)) (> cl-end 1))
- (if (cl-position (cl-check-key (car (cdr cl-p)))
- (cdr (cdr cl-p)) 0 (1- cl-end))
- (progn
- (if cl-copy (setq cl-seq (copy-sequence cl-seq)
- cl-p (nthcdr (1- cl-start) cl-seq)
- cl-copy nil))
- (setcdr cl-p (cdr (cdr cl-p))))
- (setq cl-p (cdr cl-p)))
- (setq cl-end (1- cl-end) cl-start (1+ cl-start)))
- cl-seq)))
- (let ((cl-res (cl-delete-duplicates (append cl-seq nil) cl-keys nil)))
- (if (stringp cl-seq) (concat cl-res) (vconcat cl-res)))))
-
- (defun substitute (cl-new cl-old cl-seq &rest cl-keys)
- "Substitute NEW for OLD in SEQ.
- This is a non-destructive function; it makes a copy of SEQ if necessary
- to avoid corrupting the original SEQ.
- Keywords supported: :test :test-not :key :count :start :end :from-end"
- (cl-parsing-keywords (:test :test-not :key :if :if-not :count
- (:start 0) :end :from-end) ()
- (if (or (eq cl-old cl-new)
- (<= (or cl-count (setq cl-from-end nil cl-count 8000000)) 0))
- cl-seq
- (let ((cl-i (cl-position cl-old cl-seq cl-start cl-end)))
- (if (not cl-i)
- cl-seq
- (setq cl-seq (copy-sequence cl-seq))
- (or cl-from-end
- (progn (cl-set-elt cl-seq cl-i cl-new)
- (setq cl-i (1+ cl-i) cl-count (1- cl-count))))
- (apply 'nsubstitute cl-new cl-old cl-seq ':count cl-count
- ':start cl-i cl-keys))))))
-
- (defun substitute-if (cl-new cl-pred cl-list &rest cl-keys)
- "Substitute NEW for all items satisfying PREDICATE in SEQ.
- This is a non-destructive function; it makes a copy of SEQ if necessary
- to avoid corrupting the original SEQ.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'substitute cl-new nil cl-list ':if cl-pred cl-keys))
-
- (defun substitute-if-not (cl-new cl-pred cl-list &rest cl-keys)
- "Substitute NEW for all items not satisfying PREDICATE in SEQ.
- This is a non-destructive function; it makes a copy of SEQ if necessary
- to avoid corrupting the original SEQ.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'substitute cl-new nil cl-list ':if-not cl-pred cl-keys))
-
- (defun nsubstitute (cl-new cl-old cl-seq &rest cl-keys)
- "Substitute NEW for OLD in SEQ.
- This is a destructive function; it reuses the storage of SEQ whenever possible.
- Keywords supported: :test :test-not :key :count :start :end :from-end"
- (cl-parsing-keywords (:test :test-not :key :if :if-not :count
- (:start 0) :end :from-end) ()
- (or (eq cl-old cl-new) (<= (or cl-count (setq cl-count 8000000)) 0)
- (if (and (listp cl-seq) (or (not cl-from-end) (> cl-count 4000000)))
- (let ((cl-p (nthcdr cl-start cl-seq)))
- (setq cl-end (- (or cl-end 8000000) cl-start))
- (while (and cl-p (> cl-end 0) (> cl-count 0))
- (if (cl-check-test cl-old (car cl-p))
- (progn
- (setcar cl-p cl-new)
- (setq cl-count (1- cl-count))))
- (setq cl-p (cdr cl-p) cl-end (1- cl-end))))
- (or cl-end (setq cl-end (length cl-seq)))
- (if cl-from-end
- (while (and (< cl-start cl-end) (> cl-count 0))
- (setq cl-end (1- cl-end))
- (if (cl-check-test cl-old (elt cl-seq cl-end))
- (progn
- (cl-set-elt cl-seq cl-end cl-new)
- (setq cl-count (1- cl-count)))))
- (while (and (< cl-start cl-end) (> cl-count 0))
- (if (cl-check-test cl-old (aref cl-seq cl-start))
- (progn
- (aset cl-seq cl-start cl-new)
- (setq cl-count (1- cl-count))))
- (setq cl-start (1+ cl-start))))))
- cl-seq))
-
- (defun nsubstitute-if (cl-new cl-pred cl-list &rest cl-keys)
- "Substitute NEW for all items satisfying PREDICATE in SEQ.
- This is a destructive function; it reuses the storage of SEQ whenever possible.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'nsubstitute cl-new nil cl-list ':if cl-pred cl-keys))
-
- (defun nsubstitute-if-not (cl-new cl-pred cl-list &rest cl-keys)
- "Substitute NEW for all items not satisfying PREDICATE in SEQ.
- This is a destructive function; it reuses the storage of SEQ whenever possible.
- Keywords supported: :key :count :start :end :from-end"
- (apply 'nsubstitute cl-new nil cl-list ':if-not cl-pred cl-keys))
-
- (defun find (cl-item cl-seq &rest cl-keys)
- "Find the first occurrence of ITEM in LIST.
- Return the matching ITEM, or nil if not found.
- Keywords supported: :test :test-not :key :start :end :from-end"
- (let ((cl-pos (apply 'position cl-item cl-seq cl-keys)))
- (and cl-pos (elt cl-seq cl-pos))))
-
- (defun find-if (cl-pred cl-list &rest cl-keys)
- "Find the first item satisfying PREDICATE in LIST.
- Return the matching ITEM, or nil if not found.
- Keywords supported: :key :start :end :from-end"
- (apply 'find nil cl-list ':if cl-pred cl-keys))
-
- (defun find-if-not (cl-pred cl-list &rest cl-keys)
- "Find the first item not satisfying PREDICATE in LIST.
- Return the matching ITEM, or nil if not found.
- Keywords supported: :key :start :end :from-end"
- (apply 'find nil cl-list ':if-not cl-pred cl-keys))
-
- (defun position (cl-item cl-seq &rest cl-keys)
- "Find the first occurrence of ITEM in LIST.
- Return the index of the matching item, or nil if not found.
- Keywords supported: :test :test-not :key :start :end :from-end"
- (cl-parsing-keywords (:test :test-not :key :if :if-not
- (:start 0) :end :from-end) ()
- (cl-position cl-item cl-seq cl-start cl-end cl-from-end)))
-
- (defun cl-position (cl-item cl-seq cl-start &optional cl-end cl-from-end)
- (if (listp cl-seq)
- (let ((cl-p (nthcdr cl-start cl-seq)))
- (or cl-end (setq cl-end 8000000))
- (let ((cl-res nil))
- (while (and cl-p (< cl-start cl-end) (or (not cl-res) cl-from-end))
- (if (cl-check-test cl-item (car cl-p))
- (setq cl-res cl-start))
- (setq cl-p (cdr cl-p) cl-start (1+ cl-start)))
- cl-res))
- (or cl-end (setq cl-end (length cl-seq)))
- (if cl-from-end
- (progn
- (while (and (>= (setq cl-end (1- cl-end)) cl-start)
- (not (cl-check-test cl-item (aref cl-seq cl-end)))))
- (and (>= cl-end cl-start) cl-end))
- (while (and (< cl-start cl-end)
- (not (cl-check-test cl-item (aref cl-seq cl-start))))
- (setq cl-start (1+ cl-start)))
- (and (< cl-start cl-end) cl-start))))
-
- (defun position-if (cl-pred cl-list &rest cl-keys)
- "Find the first item satisfying PREDICATE in LIST.
- Return the index of the matching item, or nil if not found.
- Keywords supported: :key :start :end :from-end"
- (apply 'position nil cl-list ':if cl-pred cl-keys))
-
- (defun position-if-not (cl-pred cl-list &rest cl-keys)
- "Find the first item not satisfying PREDICATE in LIST.
- Return the index of the matching item, or nil if not found.
- Keywords supported: :key :start :end :from-end"
- (apply 'position nil cl-list ':if-not cl-pred cl-keys))
-
- (defun count (cl-item cl-seq &rest cl-keys)
- "Count the number of occurrences of ITEM in LIST.
- Keywords supported: :test :test-not :key :start :end"
- (cl-parsing-keywords (:test :test-not :key :if :if-not (:start 0) :end) ()
- (let ((cl-count 0) cl-x)
- (or cl-end (setq cl-end (length cl-seq)))
- (if (consp cl-seq) (setq cl-seq (nthcdr cl-start cl-seq)))
- (while (< cl-start cl-end)
- (setq cl-x (if (consp cl-seq) (cl-pop cl-seq) (aref cl-seq cl-start)))
- (if (cl-check-test cl-item cl-x) (setq cl-count (1+ cl-count)))
- (setq cl-start (1+ cl-start)))
- cl-count)))
-
- (defun count-if (cl-pred cl-list &rest cl-keys)
- "Count the number of items satisfying PREDICATE in LIST.
- Keywords supported: :key :start :end"
- (apply 'count nil cl-list ':if cl-pred cl-keys))
-
- (defun count-if-not (cl-pred cl-list &rest cl-keys)
- "Count the number of items not satisfying PREDICATE in LIST.
- Keywords supported: :key :start :end"
- (apply 'count nil cl-list ':if-not cl-pred cl-keys))
-
- (defun mismatch (cl-seq1 cl-seq2 &rest cl-keys)
- "Compare SEQ1 with SEQ2, return index of first mismatching element.
- Return nil if the sequences match. If one sequence is a prefix of the
- other, the return value indicates the end of the shorted sequence.
- Keywords supported: :test :test-not :key :start1 :end1 :start2 :end2 :from-end"
- (cl-parsing-keywords (:test :test-not :key :from-end
- (:start1 0) :end1 (:start2 0) :end2) ()
- (or cl-end1 (setq cl-end1 (length cl-seq1)))
- (or cl-end2 (setq cl-end2 (length cl-seq2)))
- (if cl-from-end
- (progn
- (while (and (< cl-start1 cl-end1) (< cl-start2 cl-end2)
- (cl-check-match (elt cl-seq1 (1- cl-end1))
- (elt cl-seq2 (1- cl-end2))))
- (setq cl-end1 (1- cl-end1) cl-end2 (1- cl-end2)))
- (and (or (< cl-start1 cl-end1) (< cl-start2 cl-end2))
- (1- cl-end1)))
- (let ((cl-p1 (and (listp cl-seq1) (nthcdr cl-start1 cl-seq1)))
- (cl-p2 (and (listp cl-seq2) (nthcdr cl-start2 cl-seq2))))
- (while (and (< cl-start1 cl-end1) (< cl-start2 cl-end2)
- (cl-check-match (if cl-p1 (car cl-p1)
- (aref cl-seq1 cl-start1))
- (if cl-p2 (car cl-p2)
- (aref cl-seq2 cl-start2))))
- (setq cl-p1 (cdr cl-p1) cl-p2 (cdr cl-p2)
- cl-start1 (1+ cl-start1) cl-start2 (1+ cl-start2)))
- (and (or (< cl-start1 cl-end1) (< cl-start2 cl-end2))
- cl-start1)))))
-
- (defun search (cl-seq1 cl-seq2 &rest cl-keys)
- "Search for SEQ1 as a subsequence of SEQ2.
- Return the index of the leftmost element of the first match found;
- return nil if there are no matches.
- Keywords supported: :test :test-not :key :start1 :end1 :start2 :end2 :from-end"
- (cl-parsing-keywords (:test :test-not :key :from-end
- (:start1 0) :end1 (:start2 0) :end2) ()
- (or cl-end1 (setq cl-end1 (length cl-seq1)))
- (or cl-end2 (setq cl-end2 (length cl-seq2)))
- (if (>= cl-start1 cl-end1)
- (if cl-from-end cl-end2 cl-start2)
- (let* ((cl-len (- cl-end1 cl-start1))
- (cl-first (cl-check-key (elt cl-seq1 cl-start1)))
- (cl-if nil) cl-pos)
- (setq cl-end2 (- cl-end2 (1- cl-len)))
- (while (and (< cl-start2 cl-end2)
- (setq cl-pos (cl-position cl-first cl-seq2
- cl-start2 cl-end2 cl-from-end))
- (apply 'mismatch cl-seq1 cl-seq2
- ':start1 (1+ cl-start1) ':end1 cl-end1
- ':start2 (1+ cl-pos) ':end2 (+ cl-pos cl-len)
- ':from-end nil cl-keys))
- (if cl-from-end (setq cl-end2 cl-pos) (setq cl-start2 (1+ cl-pos))))
- (and (< cl-start2 cl-end2) cl-pos)))))
-
- (defun sort* (cl-seq cl-pred &rest cl-keys)
- "Sort the argument SEQUENCE according to PREDICATE.
- This is a destructive function; it reuses the storage of SEQUENCE if possible.
- Keywords supported: :key"
- (if (nlistp cl-seq)
- (replace cl-seq (apply 'sort* (append cl-seq nil) cl-pred cl-keys))
- (cl-parsing-keywords (:key) ()
- (if (memq cl-key '(nil identity))
- (sort cl-seq cl-pred)
- (sort cl-seq (function (lambda (cl-x cl-y)
- (funcall cl-pred (funcall cl-key cl-x)
- (funcall cl-key cl-y)))))))))
-
- (defun stable-sort (cl-seq cl-pred &rest cl-keys)
- "Sort the argument SEQUENCE stably according to PREDICATE.
- This is a destructive function; it reuses the storage of SEQUENCE if possible.
- Keywords supported: :key"
- (apply 'sort* cl-seq cl-pred cl-keys))
-
- (defun merge (cl-type cl-seq1 cl-seq2 cl-pred &rest cl-keys)
- "Destructively merge the two sequences to produce a new sequence.
- TYPE is the sequence type to return, SEQ1 and SEQ2 are the two
- argument sequences, and PRED is a `less-than' predicate on the elements.
- Keywords supported: :key"
- (or (listp cl-seq1) (setq cl-seq1 (append cl-seq1 nil)))
- (or (listp cl-seq2) (setq cl-seq2 (append cl-seq2 nil)))
- (cl-parsing-keywords (:key) ()
- (let ((cl-res nil))
- (while (and cl-seq1 cl-seq2)
- (if (funcall cl-pred (cl-check-key (car cl-seq2))
- (cl-check-key (car cl-seq1)))
- (cl-push (cl-pop cl-seq2) cl-res)
- (cl-push (cl-pop cl-seq1) cl-res)))
- (coerce (nconc (nreverse cl-res) cl-seq1 cl-seq2) cl-type))))
-
- ;;; See compiler macro in cl-macs.el
- (defun member* (cl-item cl-list &rest cl-keys)
- "Find the first occurrence of ITEM in LIST.
- Return the sublist of LIST whose car is ITEM.
- Keywords supported: :test :test-not :key"
- (if cl-keys
- (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
- (while (and cl-list (not (cl-check-test cl-item (car cl-list))))
- (setq cl-list (cdr cl-list)))
- cl-list)
- (if (and (numberp cl-item) (not (integerp cl-item)))
- (member cl-item cl-list)
- (memq cl-item cl-list))))
-
- (defun member-if (cl-pred cl-list &rest cl-keys)
- "Find the first item satisfying PREDICATE in LIST.
- Return the sublist of LIST whose car matches.
- Keywords supported: :key"
- (apply 'member* nil cl-list ':if cl-pred cl-keys))
-
- (defun member-if-not (cl-pred cl-list &rest cl-keys)
- "Find the first item not satisfying PREDICATE in LIST.
- Return the sublist of LIST whose car matches.
- Keywords supported: :key"
- (apply 'member* nil cl-list ':if-not cl-pred cl-keys))
-
- (defun cl-adjoin (cl-item cl-list &rest cl-keys)
- (if (cl-parsing-keywords (:key) t
- (apply 'member* (cl-check-key cl-item) cl-list cl-keys))
- cl-list
- (cons cl-item cl-list)))
-
- ;;; See compiler macro in cl-macs.el
- (defun assoc* (cl-item cl-alist &rest cl-keys)
- "Find the first item whose car matches ITEM in LIST.
- Keywords supported: :test :test-not :key"
- (if cl-keys
- (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
- (while (and cl-alist
- (or (not (consp (car cl-alist)))
- (not (cl-check-test cl-item (car (car cl-alist))))))
- (setq cl-alist (cdr cl-alist)))
- (and cl-alist (car cl-alist)))
- (if (and (numberp cl-item) (not (integerp cl-item)))
- (assoc cl-item cl-alist)
- (assq cl-item cl-alist))))
-
- (defun assoc-if (cl-pred cl-list &rest cl-keys)
- "Find the first item whose car satisfies PREDICATE in LIST.
- Keywords supported: :key"
- (apply 'assoc* nil cl-list ':if cl-pred cl-keys))
-
- (defun assoc-if-not (cl-pred cl-list &rest cl-keys)
- "Find the first item whose car does not satisfy PREDICATE in LIST.
- Keywords supported: :key"
- (apply 'assoc* nil cl-list ':if-not cl-pred cl-keys))
-
- (defun rassoc* (cl-item cl-alist &rest cl-keys)
- "Find the first item whose cdr matches ITEM in LIST.
- Keywords supported: :test :test-not :key"
- (if (or cl-keys (numberp cl-item))
- (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
- (while (and cl-alist
- (or (not (consp (car cl-alist)))
- (not (cl-check-test cl-item (cdr (car cl-alist))))))
- (setq cl-alist (cdr cl-alist)))
- (and cl-alist (car cl-alist)))
- (rassq cl-item cl-alist)))
-
- (defun rassoc-if (cl-pred cl-list &rest cl-keys)
- "Find the first item whose cdr satisfies PREDICATE in LIST.
- Keywords supported: :key"
- (apply 'rassoc* nil cl-list ':if cl-pred cl-keys))
-
- (defun rassoc-if-not (cl-pred cl-list &rest cl-keys)
- "Find the first item whose cdr does not satisfy PREDICATE in LIST.
- Keywords supported: :key"
- (apply 'rassoc* nil cl-list ':if-not cl-pred cl-keys))
-
- (defun union (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-union operation.
- The result list contains all items that appear in either LIST1 or LIST2.
- This is a non-destructive function; it makes a copy of the data if necessary
- to avoid corrupting the original LIST1 and LIST2.
- Keywords supported: :test :test-not :key"
- (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
- ((equal cl-list1 cl-list2) cl-list1)
- (t
- (or (>= (length cl-list1) (length cl-list2))
- (setq cl-list1 (prog1 cl-list2 (setq cl-list2 cl-list1))))
- (while cl-list2
- (if (or cl-keys (numberp (car cl-list2)))
- (setq cl-list1 (apply 'adjoin (car cl-list2) cl-list1 cl-keys))
- (or (memq (car cl-list2) cl-list1)
- (cl-push (car cl-list2) cl-list1)))
- (cl-pop cl-list2))
- cl-list1)))
-
- (defun nunion (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-union operation.
- The result list contains all items that appear in either LIST1 or LIST2.
- This is a destructive function; it reuses the storage of LIST1 and LIST2
- whenever possible.
- Keywords supported: :test :test-not :key"
- (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
- (t (apply 'union cl-list1 cl-list2 cl-keys))))
-
- (defun intersection (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-intersection operation.
- The result list contains all items that appear in both LIST1 and LIST2.
- This is a non-destructive function; it makes a copy of the data if necessary
- to avoid corrupting the original LIST1 and LIST2.
- Keywords supported: :test :test-not :key"
- (and cl-list1 cl-list2
- (if (equal cl-list1 cl-list2) cl-list1
- (cl-parsing-keywords (:key) (:test :test-not)
- (let ((cl-res nil))
- (or (>= (length cl-list1) (length cl-list2))
- (setq cl-list1 (prog1 cl-list2 (setq cl-list2 cl-list1))))
- (while cl-list2
- (if (if (or cl-keys (numberp (car cl-list2)))
- (apply 'member* (cl-check-key (car cl-list2))
- cl-list1 cl-keys)
- (memq (car cl-list2) cl-list1))
- (cl-push (car cl-list2) cl-res))
- (cl-pop cl-list2))
- cl-res)))))
-
- (defun nintersection (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-intersection operation.
- The result list contains all items that appear in both LIST1 and LIST2.
- This is a destructive function; it reuses the storage of LIST1 and LIST2
- whenever possible.
- Keywords supported: :test :test-not :key"
- (and cl-list1 cl-list2 (apply 'intersection cl-list1 cl-list2 cl-keys)))
-
- (defun set-difference (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-difference operation.
- The result list contains all items that appear in LIST1 but not LIST2.
- This is a non-destructive function; it makes a copy of the data if necessary
- to avoid corrupting the original LIST1 and LIST2.
- Keywords supported: :test :test-not :key"
- (if (or (null cl-list1) (null cl-list2)) cl-list1
- (cl-parsing-keywords (:key) (:test :test-not)
- (let ((cl-res nil))
- (while cl-list1
- (or (if (or cl-keys (numberp (car cl-list1)))
- (apply 'member* (cl-check-key (car cl-list1))
- cl-list2 cl-keys)
- (memq (car cl-list1) cl-list2))
- (cl-push (car cl-list1) cl-res))
- (cl-pop cl-list1))
- cl-res))))
-
- (defun nset-difference (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-difference operation.
- The result list contains all items that appear in LIST1 but not LIST2.
- This is a destructive function; it reuses the storage of LIST1 and LIST2
- whenever possible.
- Keywords supported: :test :test-not :key"
- (if (or (null cl-list1) (null cl-list2)) cl-list1
- (apply 'set-difference cl-list1 cl-list2 cl-keys)))
-
- (defun set-exclusive-or (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-exclusive-or operation.
- The result list contains all items that appear in exactly one of LIST1, LIST2.
- This is a non-destructive function; it makes a copy of the data if necessary
- to avoid corrupting the original LIST1 and LIST2.
- Keywords supported: :test :test-not :key"
- (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
- ((equal cl-list1 cl-list2) nil)
- (t (append (apply 'set-difference cl-list1 cl-list2 cl-keys)
- (apply 'set-difference cl-list2 cl-list1 cl-keys)))))
-
- (defun nset-exclusive-or (cl-list1 cl-list2 &rest cl-keys)
- "Combine LIST1 and LIST2 using a set-exclusive-or operation.
- The result list contains all items that appear in exactly one of LIST1, LIST2.
- This is a destructive function; it reuses the storage of LIST1 and LIST2
- whenever possible.
- Keywords supported: :test :test-not :key"
- (cond ((null cl-list1) cl-list2) ((null cl-list2) cl-list1)
- ((equal cl-list1 cl-list2) nil)
- (t (nconc (apply 'nset-difference cl-list1 cl-list2 cl-keys)
- (apply 'nset-difference cl-list2 cl-list1 cl-keys)))))
-
- (defun subsetp (cl-list1 cl-list2 &rest cl-keys)
- "True if LIST1 is a subset of LIST2.
- I.e., if every element of LIST1 also appears in LIST2.
- Keywords supported: :test :test-not :key"
- (cond ((null cl-list1) t) ((null cl-list2) nil)
- ((equal cl-list1 cl-list2) t)
- (t (cl-parsing-keywords (:key) (:test :test-not)
- (while (and cl-list1
- (apply 'member* (cl-check-key (car cl-list1))
- cl-list2 cl-keys))
- (cl-pop cl-list1))
- (null cl-list1)))))
-
- (defun subst-if (cl-new cl-pred cl-tree &rest cl-keys)
- "Substitute NEW for elements matching PREDICATE in TREE (non-destructively).
- Return a copy of TREE with all matching elements replaced by NEW.
- Keywords supported: :key"
- (apply 'sublis (list (cons nil cl-new)) cl-tree ':if cl-pred cl-keys))
-
- (defun subst-if-not (cl-new cl-pred cl-tree &rest cl-keys)
- "Substitute NEW for elts not matching PREDICATE in TREE (non-destructively).
- Return a copy of TREE with all non-matching elements replaced by NEW.
- Keywords supported: :key"
- (apply 'sublis (list (cons nil cl-new)) cl-tree ':if-not cl-pred cl-keys))
-
- (defun nsubst (cl-new cl-old cl-tree &rest cl-keys)
- "Substitute NEW for OLD everywhere in TREE (destructively).
- Any element of TREE which is `eql' to OLD is changed to NEW (via a call
- to `setcar').
- Keywords supported: :test :test-not :key"
- (apply 'nsublis (list (cons cl-old cl-new)) cl-tree cl-keys))
-
- (defun nsubst-if (cl-new cl-pred cl-tree &rest cl-keys)
- "Substitute NEW for elements matching PREDICATE in TREE (destructively).
- Any element of TREE which matches is changed to NEW (via a call to `setcar').
- Keywords supported: :key"
- (apply 'nsublis (list (cons nil cl-new)) cl-tree ':if cl-pred cl-keys))
-
- (defun nsubst-if-not (cl-new cl-pred cl-tree &rest cl-keys)
- "Substitute NEW for elements not matching PREDICATE in TREE (destructively).
- Any element of TREE which matches is changed to NEW (via a call to `setcar').
- Keywords supported: :key"
- (apply 'nsublis (list (cons nil cl-new)) cl-tree ':if-not cl-pred cl-keys))
-
- (defun sublis (cl-alist cl-tree &rest cl-keys)
- "Perform substitutions indicated by ALIST in TREE (non-destructively).
- Return a copy of TREE with all matching elements replaced.
- Keywords supported: :test :test-not :key"
- (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
- (cl-sublis-rec cl-tree)))
-
- (defvar cl-alist)
- (defun cl-sublis-rec (cl-tree) ; uses cl-alist/key/test*/if*
- (let ((cl-temp (cl-check-key cl-tree)) (cl-p cl-alist))
- (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp)))
- (setq cl-p (cdr cl-p)))
- (if cl-p (cdr (car cl-p))
- (if (consp cl-tree)
- (let ((cl-a (cl-sublis-rec (car cl-tree)))
- (cl-d (cl-sublis-rec (cdr cl-tree))))
- (if (and (eq cl-a (car cl-tree)) (eq cl-d (cdr cl-tree)))
- cl-tree
- (cons cl-a cl-d)))
- cl-tree))))
-
- (defun nsublis (cl-alist cl-tree &rest cl-keys)
- "Perform substitutions indicated by ALIST in TREE (destructively).
- Any matching element of TREE is changed via a call to `setcar'.
- Keywords supported: :test :test-not :key"
- (cl-parsing-keywords (:test :test-not :key :if :if-not) ()
- (let ((cl-hold (list cl-tree)))
- (cl-nsublis-rec cl-hold)
- (car cl-hold))))
-
- (defun cl-nsublis-rec (cl-tree) ; uses cl-alist/temp/p/key/test*/if*
- (while (consp cl-tree)
- (let ((cl-temp (cl-check-key (car cl-tree))) (cl-p cl-alist))
- (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp)))
- (setq cl-p (cdr cl-p)))
- (if cl-p (setcar cl-tree (cdr (car cl-p)))
- (if (consp (car cl-tree)) (cl-nsublis-rec (car cl-tree))))
- (setq cl-temp (cl-check-key (cdr cl-tree)) cl-p cl-alist)
- (while (and cl-p (not (cl-check-test-nokey (car (car cl-p)) cl-temp)))
- (setq cl-p (cdr cl-p)))
- (if cl-p
- (progn (setcdr cl-tree (cdr (car cl-p))) (setq cl-tree nil))
- (setq cl-tree (cdr cl-tree))))))
-
- (defun tree-equal (cl-x cl-y &rest cl-keys)
- "T if trees X and Y have `eql' leaves.
- Atoms are compared by `eql'; cons cells are compared recursively.
- Keywords supported: :test :test-not :key"
- (cl-parsing-keywords (:test :test-not :key) ()
- (cl-tree-equal-rec cl-x cl-y)))
-
- (defun cl-tree-equal-rec (cl-x cl-y)
- (while (and (consp cl-x) (consp cl-y)
- (cl-tree-equal-rec (car cl-x) (car cl-y)))
- (setq cl-x (cdr cl-x) cl-y (cdr cl-y)))
- (and (not (consp cl-x)) (not (consp cl-y)) (cl-check-match cl-x cl-y)))
-
-
- (run-hooks 'cl-seq-load-hook)
-
- ;;; cl-seq.el ends here
-