Avoid a compilation warning.

[gnulib.git] / lib / gl_anylinked_list2.h

diff --git a/lib/gl_anylinked_list2.h b/lib/gl_anylinked_list2.h
index 718dfb7..9fbe5a8 100644 (file)
--- a/lib/gl_anylinked_list2.h
+++ b/lib/gl_anylinked_list2.h
@@ -1,11 +1,11 @@
 /* Sequential list data type implemented by a linked list.
-   Copyright (C) 2006 Free Software Foundation, Inc.
+   Copyright (C) 2006-2008 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
-   This program is free software; you can redistribute it and/or modify
+   This program 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.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -13,8 +13,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Common code of gl_linked_list.c and gl_linkedhash_list.c.  */
 
@@ -41,6 +40,7 @@ static gl_list_t
 gl_linked_create_empty (gl_list_implementation_t implementation,
                        gl_listelement_equals_fn equals_fn,
                        gl_listelement_hashcode_fn hashcode_fn,
+                       gl_listelement_dispose_fn dispose_fn,
                        bool allow_duplicates)
 {
   struct gl_list_impl *list = XMALLOC (struct gl_list_impl);
@@ -48,6 +48,7 @@ gl_linked_create_empty (gl_list_implementation_t implementation,
   list->base.vtable = implementation;
   list->base.equals_fn = equals_fn;
   list->base.hashcode_fn = hashcode_fn;
+  list->base.dispose_fn = dispose_fn;
   list->base.allow_duplicates = allow_duplicates;
 #if WITH_HASHTABLE
   list->table_size = 11;
@@ -64,6 +65,7 @@ static gl_list_t
 gl_linked_create (gl_list_implementation_t implementation,
                  gl_listelement_equals_fn equals_fn,
                  gl_listelement_hashcode_fn hashcode_fn,
+                 gl_listelement_dispose_fn dispose_fn,
                  bool allow_duplicates,
                  size_t count, const void **contents)
 {
@@ -73,6 +75,7 @@ gl_linked_create (gl_list_implementation_t implementation,
   list->base.vtable = implementation;
   list->base.equals_fn = equals_fn;
   list->base.hashcode_fn = hashcode_fn;
+  list->base.dispose_fn = dispose_fn;
   list->base.allow_duplicates = allow_duplicates;
 #if WITH_HASHTABLE
   {
@@ -123,6 +126,32 @@ gl_linked_node_value (gl_list_t list, gl_list_node_t node)
   return node->value;
 }
 
+static void
+gl_linked_node_set_value (gl_list_t list, gl_list_node_t node, const void *elt)
+{
+#if WITH_HASHTABLE
+  if (elt != node->value)
+    {
+      size_t new_hashcode =
+       (list->base.hashcode_fn != NULL
+        ? list->base.hashcode_fn (elt)
+        : (size_t)(uintptr_t) elt);
+
+      if (new_hashcode != node->h.hashcode)
+       {
+         remove_from_bucket (list, node);
+         node->value = elt;
+         node->h.hashcode = new_hashcode;
+         add_to_bucket (list, node);
+       }
+      else
+       node->value = elt;
+    }
+#else
+  node->value = elt;
+#endif
+}
+
 static gl_list_node_t
 gl_linked_next_node (gl_list_t list, gl_list_node_t node)
 {
@@ -684,6 +713,8 @@ gl_linked_remove_node (gl_list_t list, gl_list_node_t node)
   next->prev = prev;
   list->count--;
 
+  if (list->base.dispose_fn != NULL)
+    list->base.dispose_fn (node->value);
   free (node);
   return true;
 }
@@ -730,6 +761,8 @@ gl_linked_remove_at (gl_list_t list, size_t position)
 #endif
   list->count--;
 
+  if (list->base.dispose_fn != NULL)
+    list->base.dispose_fn (removed_node->value);
   free (removed_node);
   return true;
 }
@@ -748,11 +781,14 @@ gl_linked_remove (gl_list_t list, const void *elt)
 static void
 gl_linked_list_free (gl_list_t list)
 {
+  gl_listelement_dispose_fn dispose = list->base.dispose_fn;
   gl_list_node_t node;
 
   for (node = list->root.next; node != &list->root; )
     {
       gl_list_node_t next = node->next;
+      if (dispose != NULL)
+       dispose (node->value);
       free (node);
       node = next;
     }