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-rw-r--r--include/qapi/visitor-impl.h2
-rw-r--r--include/qapi/visitor.h2
-rw-r--r--qapi/qapi-visit-core.c15
-rw-r--r--scripts/qapi-visit.py6
4 files changed, 25 insertions, 0 deletions
diff --git a/include/qapi/visitor-impl.h b/include/qapi/visitor-impl.h
index ecc0183196..09bb0fd408 100644
--- a/include/qapi/visitor-impl.h
+++ b/include/qapi/visitor-impl.h
@@ -55,6 +55,8 @@ struct Visitor
void (*type_int64)(Visitor *v, int64_t *obj, const char *name, Error **errp);
/* visit_type_size() falls back to (*type_uint64)() if type_size is unset */
void (*type_size)(Visitor *v, uint64_t *obj, const char *name, Error **errp);
+ bool (*start_union)(Visitor *v, bool data_present, Error **errp);
+ void (*end_union)(Visitor *v, bool data_present, Error **errp);
};
void input_type_enum(Visitor *v, int *obj, const char *strings[],
diff --git a/include/qapi/visitor.h b/include/qapi/visitor.h
index 4a0178fa46..5934f59ad8 100644
--- a/include/qapi/visitor.h
+++ b/include/qapi/visitor.h
@@ -58,5 +58,7 @@ void visit_type_size(Visitor *v, uint64_t *obj, const char *name, Error **errp);
void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp);
void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp);
void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp);
+bool visit_start_union(Visitor *v, bool data_present, Error **errp);
+void visit_end_union(Visitor *v, bool data_present, Error **errp);
#endif
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index 55f8d4068c..b66b93ae2b 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -58,6 +58,21 @@ void visit_end_list(Visitor *v, Error **errp)
v->end_list(v, errp);
}
+bool visit_start_union(Visitor *v, bool data_present, Error **errp)
+{
+ if (v->start_union) {
+ return v->start_union(v, data_present, errp);
+ }
+ return true;
+}
+
+void visit_end_union(Visitor *v, bool data_present, Error **errp)
+{
+ if (v->end_union) {
+ v->end_union(v, data_present, errp);
+ }
+}
+
void visit_optional(Visitor *v, bool *present, const char *name,
Error **errp)
{
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index df9f7fb657..8f845a2b29 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -358,6 +358,9 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
if (err) {
goto out_obj;
}
+ if (!visit_start_union(m, !!(*obj)->data, &err) || err) {
+ goto out_obj;
+ }
switch ((*obj)->kind) {
''',
disc_type = disc_type,
@@ -386,6 +389,9 @@ void visit_type_%(name)s(Visitor *m, %(name)s **obj, const char *name, Error **e
out_obj:
error_propagate(errp, err);
err = NULL;
+ visit_end_union(m, !!(*obj)->data, &err);
+ error_propagate(errp, err);
+ err = NULL;
}
visit_end_struct(m, &err);
out: