[Qemu-devel] [PATCH v5 42/46] qapi: support implicit structs in OptsVisitor

[Eric Blake <eblake@redhat.com>]

From: Kővágó, Zoltán <dirty.ice.hu@gmail.com>

They are required for flat unions (you still have to allocate the
structs).

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-Id: <88451f26df139c09b56b1525f3c5afeea43dd3db.1441627175.git.DirtY.iCE.hu@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
---
 qapi/opts-visitor.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/qapi/opts-visitor.c b/qapi/opts-visitor.c
index b2cd5b3..900b2fa 100644
--- a/qapi/opts-visitor.c
+++ b/qapi/opts-visitor.c
@@ -149,6 +149,12 @@ opts_start_struct(Visitor *v, void **obj, const char *kind,
     }
 }

+static void
+opts_start_implicit_struct(Visitor *v, void **obj, size_t size, Error **errp)
+{
+    opts_start_struct(v, obj, NULL, NULL, size, errp);
+}
+

 static gboolean
 ghr_true(gpointer ign_key, gpointer ign_value, gpointer ign_user_data)
@@ -185,6 +191,12 @@ opts_end_struct(Visitor *v, Error **errp)
     ov->fake_id_opt = NULL;
 }

+static void
+opts_end_implicit_struct(Visitor *v, Error **errp)
+{
+    opts_end_struct(v, errp);
+}
+

 static GQueue *
 lookup_distinct(const OptsVisitor *ov, const char *name, Error **errp)
@@ -508,6 +520,9 @@ opts_visitor_new(const QemuOpts *opts)
     ov->visitor.start_struct = &opts_start_struct;
     ov->visitor.end_struct   = &opts_end_struct;

+    ov->visitor.start_implicit_struct = &opts_start_implicit_struct;
+    ov->visitor.end_implicit_struct = &opts_end_implicit_struct;
+
     ov->visitor.start_list = &opts_start_list;
     ov->visitor.next_list  = &opts_next_list;
     ov->visitor.end_list   = &opts_end_list;
-- 
2.4.3