[movitz-cvs] CVS movitz/losp/muerte - movitz-cvs@common-lisp.net - mailman3.common-lisp.net

27 Apr 2008

Update of /project/movitz/cvsroot/movitz/losp/muerte
In directory clnet:/tmp/cvs-serv14216
Modified Files:
    lists.lisp 
Log Message:
Fix assoc-if, add rassoc-if, member-if, and mapcon.

--- /project/movitz/cvsroot/movitz/losp/muerte/lists.lisp	2008/04/19 12:44:02	1.27
+++ /project/movitz/cvsroot/movitz/losp/muerte/lists.lisp	2008/04/27 09:28:40	1.28
@@ -9,7 +9,7 @@
 ;;;; Created at:    Tue Dec  5 18:40:11 2000
 ;;;; Distribution:  See the accompanying file COPYING.
 ;;;;                
-;;;; $Id: lists.lisp,v 1.27 2008/04/19 12:44:02 ffjeld Exp $
+;;;; $Id: lists.lisp,v 1.28 2008/04/27 09:28:40 ffjeld Exp $
 ;;;;                
 ;;;;------------------------------------------------------------------
@@ -82,6 +82,40 @@
        (when (test item (key (car a)))
          (return a))))))))
+(defun assoc-if (predicate alist &key (key 'identity))
+  "=> entry"
+  (numargs-case
+   (2 (predicate alist)
+      (with-funcallable (predicate)
+	(dolist (a alist)
+	  (when a
+	    (when (predicate (car a))
+	      (return a))))))
+   (t (predicate alist &key (key 'identity))
+      (with-funcallable (key)
+	(with-funcallable (predicate)
+	  (dolist (a alist)
+	    (when a
+	      (when (predicate (key (car a)))
+		(return a)))))))))
+
+(defun assoc-if-not (predicate alist &key (key 'identity))
+  "=> entry"
+  (numargs-case
+   (2 (predicate alist)
+      (with-funcallable (predicate)
+	(dolist (a alist)
+	  (when a
+	    (when (not (predicate (car a)))
+	      (return a))))))
+   (t (predicate alist &key (key 'identity))
+      (with-funcallable (key)
+	(with-funcallable (predicate)
+	  (dolist (a alist)
+	    (when a
+	      (when (not (predicate (key (car a))))
+		(return a)))))))))
+
 (defun rassoc (item alist &key (test 'eql) (key 'identity))
   (numargs-case
    (2 (item alist)
@@ -95,6 +129,24 @@
        (when (test item (key (cdr a)))
          (return a))))))))
+(defun rassoc-if (predicate alist &key (key 'identity))
+  "=> entry"
+  (numargs-case
+   (2 (predicate alist)
+      (with-funcallable (predicate)
+	(dolist (a alist)
+	  (when a
+	    (when (predicate (cdr a))
+	      (return a))))))
+   (t (predicate alist &key (key 'identity))
+      (with-funcallable (key)
+	(with-funcallable (predicate)
+	  (dolist (a alist)
+	    (when a
+	      (when (predicate (key (cdr a)))
+		(return a)))))))))
+
+
 (defun list-length (x)
   (do ((n 0 (+ n 2))			;Counter.
        (fast x (cddr fast))		;Fast pointer: leaps by 2.
@@ -128,6 +180,38 @@
          (when (test (key item) (key (car p)))
    	(return p)))))))))
+(defun member-if (predicate list &key key)
+  (numargs-case
+   (2 (predicate list)
+      (with-funcallable (predicate)
+	(do ((p list (cdr p)))
+	    ((endp p) nil)
+	  (when (predicate (car p))
+	    (return p)))))
+   (t (predicate list &key (key 'identity))
+      (with-funcallable (predicate)
+	(with-funcallable (key)
+	  (do ((p list (cdr p)))
+	      ((endp p) nil)
+	    (when (predicate (key (car p)))
+	      (return p))))))))
+
+(defun member-if-not (predicate list &key key)
+  (numargs-case
+   (2 (predicate list)
+      (with-funcallable (predicate)
+	(do ((p list (cdr p)))
+	    ((endp p) nil)
+	  (when (not (predicate (car p)))
+	    (return p)))))
+   (t (predicate list &key (key 'identity))
+      (with-funcallable (predicate)
+	(with-funcallable (key)
+	  (do ((p list (cdr p)))
+	      ((endp p) nil)
+	    (when (not (predicate (key (car p))))
+	      (return p))))))))
+
 (defun last (list &optional (n 1))
   ;; from the hyperspec..
   (check-type n integer)		; (integer 0))
@@ -320,8 +404,6 @@
    (setf more-lists
          (map-into more-lists #'cdr more-lists))))))
-
-
 (defun mapcan (function first-list &rest more-lists)
   (numargs-case
    (2 (function first-list)
@@ -362,6 +444,48 @@
    (setf more-lists
          (map-into more-lists #'cdr more-lists))))))
+(defun mapcon (function first-list &rest more-lists)
+  (numargs-case
+   (2 (function first-list)
+      (do ((result nil)
+	   (tail nil)
+	   (p first-list (cdr p)))
+	  ((endp p) result)
+	(let ((m (funcall function p)))
+	  (if tail
+	      (setf (cdr tail) m)
+	      (setf result m))
+	  (setf tail (last m)))))
+   (3 (function first-list second-list)
+      (do ((result nil)
+	   (tail nil)
+	   (p first-list (cdr p))
+	   (q second-list (cdr q)))
+	  ((or (endp p)
+	       (endp q))
+	   result)
+	(let ((m (funcall function p q)))
+	  (if tail
+	      (setf (cdr tail) m)
+	      (setf result m))
+	  (setf tail (last m)))))
+   (t (function first-list &rest more-lists)
+      (declare (dynamic-extent more-lists))
+      (do ((result nil)
+	   (tail nil))
+	  ((or (endp first-list)
+	       (some #'endp more-lists))
+	   result)
+	(let ((m (apply function first-list more-lists)))
+	  (if tail
+	      (setf (cdr tail) m)
+	      (setf result m))
+	  (setf tail (last m)))
+	(setf first-list
+	      (cdr first-list))
+	(setf more-lists
+	      (map-into more-lists #'cdr more-lists))))))
+
 (defun mapc (function first-list &rest more-lists)
   (numargs-case
    (2 (function first-list)

    