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gliststore: Store validity of last_position explicitly

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Rather than storing it as an invalid value in last_position, store it as
a separate boolean.

This introduces no functional changes, but should fix some warnings from
MSVC.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

https://gitlab.gnome.org/GNOME/glib/issues/1500
This commit is contained in:
Philip Withnall
2019-01-18 15:22:19 +00:00
parent 1a73410a96
commit c9aba16af3
1 changed files with 7 additions and 3 deletions
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10
gio/gliststore.c
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@@ -55,6 +55,7 @@ struct _GListStore
/* cache */
guint last_position;
GSequenceIter *last_iter;
gboolean last_position_valid;
};
enum
@@ -79,7 +80,8 @@ g_list_store_items_changed (GListStore *store,
if (position <= store->last_position)
{
store->last_iter = NULL;
store->last_position = -1u;
store->last_position = 0;
store->last_position_valid = FALSE;
}
g_list_model_items_changed (G_LIST_MODEL (store), position, removed, added);
@@ -179,7 +181,7 @@ g_list_store_get_item (GListModel *list,
GListStore *store = G_LIST_STORE (list);
GSequenceIter *it = NULL;
if (store->last_position != -1u)
if (store->last_position_valid)
{
if (position < G_MAXUINT && store->last_position == position + 1)
it = g_sequence_iter_prev (store->last_iter);
@@ -194,6 +196,7 @@ g_list_store_get_item (GListModel *list,
store->last_iter = it;
store->last_position = position;
store->last_position_valid = TRUE;
if (g_sequence_iter_is_end (it))
return NULL;
@@ -213,7 +216,8 @@ static void
g_list_store_init (GListStore *store)
{
store->items = g_sequence_new (g_object_unref);
store->last_position = -1u;
store->last_position = 0;
store->last_position_valid = FALSE;
}
/**