Add SEQUENCEP.

[jscl.git] / src / list.lisp

diff --git a/src/list.lisp b/src/list.lisp
index a41d821..36adc0e 100644 (file)
--- a/src/list.lisp
+++ b/src/list.lisp
@@ -13,6 +13,8 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with JSCL.  If not, see <http://www.gnu.org/licenses/>.
 
+(/debug "loading list.lisp!")
+
 ;;;; Various list functions
 
 (defun cons (x y) (cons x y))
@@ -68,6 +70,16 @@
 (defun nth (n list)
   (car (nthcdr n list)))
 
+(define-setf-expander nth (n list)
+  (let ((g!list (gensym))
+        (g!index (gensym))
+        (g!value (gensym)))
+    (values (list g!list g!index)
+            (list list n)
+            (list g!value)
+            `(rplaca (nthcdr ,g!index ,g!list) ,g!value)
+            `(nth ,g!index ,g!list))))
+
 (defun caar (x) (car (car x)))
 (defun cadr (x) (car (cdr x)))
 (defun cdar (x) (cdr (car x)))
@@ -184,10 +196,29 @@
                (rplaca tail (cdar tail)))
              (collect (apply func elems))))))))
 
+(defun mapn (func list)
+  (with-collect
+    (while list
+      (collect (funcall func list))
+      (setq list (cdr list)))))
+
+(defun maplist (func list &rest lists)
+  (let ((lists (cons list lists)))
+    (with-collect
+      (block loop
+        (loop
+           (let ((elems (mapn #'car lists)))
+             (do ((tail lists (cdr tail)))
+                 ((null tail))
+               (when (null (car tail)) (return-from loop))
+               (rplaca tail (cdar tail)))
+             (collect (apply func elems))))))))
+
 (defun mapc (func &rest lists)
-  (do* ((elems (map1 #'car lists) (map1 #'car lists-rest))
-        (lists-rest (map1 #'cdr lists) (map1 #'cdr lists-rest)))
-       ((dolist (x elems) (when (null x) (return t)))
+  (do* ((tails lists (map1 #'cdr tails))
+        (elems (map1 #'car tails)
+               (map1 #'car tails)))
+       ((dolist (x tails) (when (null x) (return t)))
         (car lists))
     (apply func elems)))
 
@@ -208,16 +239,19 @@
     (setq list (cdr list))))
 
 
-(defun assoc (x alist &key (test #'eql))
+(defun assoc (x alist &key key (test #'eql testp) (test-not #'eql test-not-p))
   (while alist
-    (if (funcall test x (caar alist))
+    (if (satisfies-test-p x (caar alist) :key key :test test :testp testp
+                          :test-not test-not :test-not-p test-not-p)
       (return)
       (setq alist (cdr alist))))
   (car alist))
 
-(defun rassoc (x alist &key (test #'eql))
+(defun rassoc (x alist &key key (test #'eql) (test #'eql testp)
+                 (test-not #'eql test-not-p))
   (while alist
-    (if (funcall test x (cdar alist))
+    (if (satisfies-test-p x (cdar alist) :key key :test test :testp testp
+                          :test-not test-not :test-not-p test-not-p)
       (return)
       (setq alist (cdr alist))))
   (car alist))
@@ -256,7 +290,7 @@
             (list x)
             (list new-value)
             `(progn (rplacd ,cons ,new-value) ,new-value)
-            `(car ,cons))))
+            `(cdr ,cons))))
 
 
 ;; The NCONC function is based on the SBCL's one.
@@ -304,6 +338,6 @@
 (defun intersection (list1 list2 &key (test #'eql) (key #'identity))
   (let ((new-list ()))
     (dolist (x list1)
-      (when (member x list2 :test test :key key)
+      (when (member (funcall key x) list2 :test test :key key)
         (push x new-list)))
     new-list))