struct Visitor
{
+ /*
+ * Only input visitors may fail!
+ */
+
/* Must be set to visit structs */
- void (*start_struct)(Visitor *v, const char *name, void **obj,
+ bool (*start_struct)(Visitor *v, const char *name, void **obj,
size_t size, Error **errp);
/* Optional; intended for input visitors */
- void (*check_struct)(Visitor *v, Error **errp);
+ bool (*check_struct)(Visitor *v, Error **errp);
/* Must be set to visit structs */
void (*end_struct)(Visitor *v, void **obj);
/* Must be set; implementations may require @list to be non-null,
* but must document it. */
- void (*start_list)(Visitor *v, const char *name, GenericList **list,
+ bool (*start_list)(Visitor *v, const char *name, GenericList **list,
size_t size, Error **errp);
/* Must be set */
GenericList *(*next_list)(Visitor *v, GenericList *tail, size_t size);
+ /* Optional; intended for input visitors */
+ bool (*check_list)(Visitor *v, Error **errp);
+
/* Must be set */
void (*end_list)(Visitor *v, void **list);
- /* Must be set by input and dealloc visitors to visit alternates;
- * optional for output visitors. */
- void (*start_alternate)(Visitor *v, const char *name,
+ /* Must be set by input and clone visitors to visit alternates */
+ bool (*start_alternate)(Visitor *v, const char *name,
GenericAlternate **obj, size_t size,
- bool promote_int, Error **errp);
+ Error **errp);
- /* Optional, needed for dealloc visitor */
+ /* Optional */
void (*end_alternate)(Visitor *v, void **obj);
/* Must be set */
- void (*type_int64)(Visitor *v, const char *name, int64_t *obj,
+ bool (*type_int64)(Visitor *v, const char *name, int64_t *obj,
Error **errp);
/* Must be set */
- void (*type_uint64)(Visitor *v, const char *name, uint64_t *obj,
+ bool (*type_uint64)(Visitor *v, const char *name, uint64_t *obj,
Error **errp);
/* Optional; fallback is type_uint64() */
- void (*type_size)(Visitor *v, const char *name, uint64_t *obj,
+ bool (*type_size)(Visitor *v, const char *name, uint64_t *obj,
Error **errp);
/* Must be set */
- void (*type_bool)(Visitor *v, const char *name, bool *obj, Error **errp);
+ bool (*type_bool)(Visitor *v, const char *name, bool *obj, Error **errp);
/* Must be set */
- void (*type_str)(Visitor *v, const char *name, char **obj, Error **errp);
+ bool (*type_str)(Visitor *v, const char *name, char **obj, Error **errp);
/* Must be set to visit numbers */
- void (*type_number)(Visitor *v, const char *name, double *obj,
+ bool (*type_number)(Visitor *v, const char *name, double *obj,
Error **errp);
/* Must be set to visit arbitrary QTypes */
- void (*type_any)(Visitor *v, const char *name, QObject **obj,
+ bool (*type_any)(Visitor *v, const char *name, QObject **obj,
Error **errp);
/* Must be set to visit explicit null values. */
- void (*type_null)(Visitor *v, const char *name, Error **errp);
+ bool (*type_null)(Visitor *v, const char *name, QNull **obj,
+ Error **errp);
- /* Must be set for input visitors, optional otherwise. The core
- * takes care of the return type in the public interface. */
+ /* Must be set for input visitors to visit structs, optional otherwise.
+ The core takes care of the return type in the public interface. */
void (*optional)(Visitor *v, const char *name, bool *present);
+ /* Optional */
+ bool (*policy_reject)(Visitor *v, const char *name,
+ unsigned special_features, Error **errp);
+
+ /* Optional */
+ bool (*policy_skip)(Visitor *v, const char *name,
+ unsigned special_features);
+
/* Must be set */
VisitorType type;
+ /* Optional */
+ struct CompatPolicy compat_policy;
+
/* Must be set for output visitors, optional otherwise. */
void (*complete)(Visitor *v, void *opaque);