qapi: Add qobject_is_equal()
This generic function (along with its implementations for different
types) determines whether two QObjects are equal.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20171114180128.17076-4-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
diff --git a/qobject/qdict.c b/qobject/qdict.c
index 576018e..e8f15f1 100644
--- a/qobject/qdict.c
+++ b/qobject/qdict.c
@@ -403,6 +403,35 @@
}
/**
+ * qdict_is_equal(): Test whether the two QDicts are equal
+ *
+ * Here, equality means whether they contain the same keys and whether
+ * the respective values are in turn equal (i.e. invoking
+ * qobject_is_equal() on them yields true).
+ */
+bool qdict_is_equal(const QObject *x, const QObject *y)
+{
+ const QDict *dict_x = qobject_to_qdict(x);
+ const QDict *dict_y = qobject_to_qdict(y);
+ const QDictEntry *e;
+
+ if (qdict_size(dict_x) != qdict_size(dict_y)) {
+ return false;
+ }
+
+ for (e = qdict_first(dict_x); e; e = qdict_next(dict_x, e)) {
+ const QObject *obj_x = qdict_entry_value(e);
+ const QObject *obj_y = qdict_get(dict_y, qdict_entry_key(e));
+
+ if (!qobject_is_equal(obj_x, obj_y)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/**
* qdict_destroy_obj(): Free all the memory allocated by a QDict
*/
void qdict_destroy_obj(QObject *obj)
