gdkarray: Add a "stolen" boolean to splice()

If set to TRUE, does not call the free func for the removed items.

This can be used to move items between arrays without having to do the
refcounting dance.

gdk/gdkarrayimpl.c

@@ -182,6 +182,7 @@ G_GNUC_UNUSED static inline void
 gdk_array(splice) (GdkArray *self,
                    gsize      pos,
                    gsize      removed,
+                   gboolean   stolen,
                    _T_       *additions,
                    gsize      added)
 {
@@ -192,8 +193,9 @@ gdk_array(splice) (GdkArray *self,
   g_assert (pos + removed <= size);
   remaining = size - pos - removed;
 
-  gdk_array(free_elements) (gdk_array(index) (self, pos),
+  if (!stolen)
-                            gdk_array(index) (self, pos + removed));
+    gdk_array(free_elements) (gdk_array(index) (self, pos),
+                              gdk_array(index) (self, pos + removed));
 
   gdk_array(reserve) (self, size - removed + added);
 
@@ -225,9 +227,9 @@ gdk_array(set_size) (GdkArray *self,
 {
   gsize old_size = gdk_array(get_size) (self);
   if (new_size > old_size)
-    gdk_array(splice) (self, old_size, 0, NULL, new_size - old_size);
+    gdk_array(splice) (self, old_size, 0, FALSE, NULL, new_size - old_size);
   else
-    gdk_array(splice) (self, new_size, old_size - new_size, NULL, 0);
+    gdk_array(splice) (self, new_size, old_size - new_size, FALSE, NULL, 0);
 }
 
 G_GNUC_UNUSED static void
@@ -241,6 +243,7 @@ gdk_array(append) (GdkArray *self,
   gdk_array(splice) (self, 
                      gdk_array(get_size) (self),
                      0,
+                     FALSE,
 #ifdef GDK_ARRAY_BY_VALUE
                      value,
 #else

gtk/gtkactionmuxer.c

@@ -100,7 +100,7 @@ gtk_accels_remove (GtkAccels  *accels,
 
   position = gtk_accels_find (accels, action_and_target);
   if (position < gtk_accels_get_size (accels))
-    gtk_accels_splice (accels, position, 1, NULL, 0);
+    gtk_accels_splice (accels, position, 1, FALSE, NULL, 0);
 }
 
 /*< private >

gtk/gtkcssselector.c

@@ -167,7 +167,7 @@ gtk_css_selector_matches_insert_sorted (GtkCssSelectorMatches *matches,
         break;
     }
 
-  gtk_css_selector_matches_splice (matches, i, 0, (gpointer[1]) { data }, 1);
+  gtk_css_selector_matches_splice (matches, i, 0, FALSE, (gpointer[1]) { data }, 1);
 }
 
 static inline gboolean

gtk/gtkmultifilter.c

@@ -206,7 +206,7 @@ gtk_multi_filter_remove (GtkMultiFilter *self,
 
   filter = gtk_filters_get (&self->filters, position);
   g_signal_handlers_disconnect_by_func (filter, gtk_multi_filter_changed_cb, self);
-  gtk_filters_splice (&self->filters, position, 1, NULL, 0);
+  gtk_filters_splice (&self->filters, position, 1, FALSE, NULL, 0);
 
   gtk_filter_changed (GTK_FILTER (self),
                       GTK_MULTI_FILTER_GET_CLASS (self)->removal_change);

gtk/gtkmultisorter.c

@@ -432,7 +432,7 @@ gtk_multi_sorter_remove (GtkMultiSorter *self,
 
   sorter = gtk_sorters_get (&self->sorters, position);
   g_signal_handlers_disconnect_by_func (sorter, gtk_multi_sorter_changed_cb, self);
-  gtk_sorters_splice (&self->sorters, position, 1, NULL, 0);
+  gtk_sorters_splice (&self->sorters, position, 1, FALSE, NULL, 0);
 
   gtk_sorter_changed_with_keys (GTK_SORTER (self),
                                 GTK_SORTER_CHANGE_LESS_STRICT,

gtk/gtksnapshot.c

@@ -1386,7 +1386,7 @@ gtk_snapshot_pop_one (GtkSnapshot *snapshot)
 
       /* Remove all the state's nodes from the list of nodes */
       g_assert (state->start_node_index + state->n_nodes == gtk_snapshot_nodes_get_size (&snapshot->nodes));
-      gtk_snapshot_nodes_splice (&snapshot->nodes, state->start_node_index, state->n_nodes, NULL, 0);
+      gtk_snapshot_nodes_splice (&snapshot->nodes, state->start_node_index, state->n_nodes, FALSE, NULL, 0);
     }
   else
     {
@@ -1400,7 +1400,7 @@ gtk_snapshot_pop_one (GtkSnapshot *snapshot)
       g_assert (previous_state->start_node_index + previous_state->n_nodes == gtk_snapshot_nodes_get_size (&snapshot->nodes));
     }
 
-  gtk_snapshot_states_splice (&snapshot->state_stack, state_index, 1, NULL, 0);
+  gtk_snapshot_states_splice (&snapshot->state_stack, state_index, 1, FALSE, NULL, 0);
 
   return node;
 }

gtk/gtkstringlist.c

@@ -471,7 +471,7 @@ gtk_string_list_splice (GtkStringList      *self,
   else
     n_additions = 0;
 
-  objects_splice (&self->items, position, n_removals, NULL, n_additions);
+  objects_splice (&self->items, position, n_removals, FALSE, NULL, n_additions);
 
   for (i = 0; i < n_additions; i++)
     {

testsuite/gdk/arrayimpl.c

@@ -77,7 +77,7 @@ gdk_array(test_splice) (void)
       for (j = 0; j < add; j++)
         sum += ++additions[j];
 
-      gdk_array(splice) (&v, pos, remove, additions, add);
+      gdk_array(splice) (&v, pos, remove, FALSE, additions, add);
       {
         gsize total = 0;
         for (j = 0; j < gdk_array(get_size) (&v); j++)