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authorKevin Wolf <kwolf@redhat.com>2013-07-03 15:52:42 +0200
committerKevin Wolf <kwolf@redhat.com>2013-07-26 20:17:15 +0200
commit761d524dbcc5bb41213dd0f238f43c273bc2b077 (patch)
treee96fec00aacf28df3328fd8dc96b014b85bcba89 /qapi
parent51631493e4876081ae27078b50bd95bd4418bf37 (diff)
downloadqemu-arm-761d524dbcc5bb41213dd0f238f43c273bc2b077.tar.gz
qapi: Add visitor for implicit structs
These can be used when an embedded struct is parsed and members not belonging to the struct may be present in the input (e.g. parsing a flat namespace QMP union, where fields from both the base and one of the alternative types are mixed in the JSON object) Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'qapi')
-rw-r--r--qapi/qapi-visit-core.c16
-rw-r--r--qapi/qmp-input-visitor.c14
2 files changed, 30 insertions, 0 deletions
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index 401ee6e597..9b4d51bc0a 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -45,6 +45,22 @@ void visit_end_struct(Visitor *v, Error **errp)
v->end_struct(v, errp);
}
+void visit_start_implicit_struct(Visitor *v, void **obj, size_t size,
+ Error **errp)
+{
+ if (!error_is_set(errp) && v->start_implicit_struct) {
+ v->start_implicit_struct(v, obj, size, errp);
+ }
+}
+
+void visit_end_implicit_struct(Visitor *v, Error **errp)
+{
+ assert(!error_is_set(errp));
+ if (v->end_implicit_struct) {
+ v->end_implicit_struct(v, errp);
+ }
+}
+
void visit_start_list(Visitor *v, const char *name, Error **errp)
{
if (!error_is_set(errp)) {
diff --git a/qapi/qmp-input-visitor.c b/qapi/qmp-input-visitor.c
index 67fb127050..59c5cace96 100644
--- a/qapi/qmp-input-visitor.c
+++ b/qapi/qmp-input-visitor.c
@@ -144,6 +144,18 @@ static void qmp_input_end_struct(Visitor *v, Error **errp)
qmp_input_pop(qiv, errp);
}
+static void qmp_input_start_implicit_struct(Visitor *v, void **obj,
+ size_t size, Error **errp)
+{
+ if (obj) {
+ *obj = g_malloc0(size);
+ }
+}
+
+static void qmp_input_end_implicit_struct(Visitor *v, Error **errp)
+{
+}
+
static void qmp_input_start_list(Visitor *v, const char *name, Error **errp)
{
QmpInputVisitor *qiv = to_qiv(v);
@@ -293,6 +305,8 @@ QmpInputVisitor *qmp_input_visitor_new(QObject *obj)
v->visitor.start_struct = qmp_input_start_struct;
v->visitor.end_struct = qmp_input_end_struct;
+ v->visitor.start_implicit_struct = qmp_input_start_implicit_struct;
+ v->visitor.end_implicit_struct = qmp_input_end_implicit_struct;
v->visitor.start_list = qmp_input_start_list;
v->visitor.next_list = qmp_input_next_list;
v->visitor.end_list = qmp_input_end_list;