qapi: Make visitor functions taking Error ** return bool, not void

See recent commit "error: Document Error API usage rules" for
rationale.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-18-armbru@redhat.com>

1 files changed, 18 insertions, 9 deletions

diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c
index 2239fc6417..ef283f2966 100644
--- a/qapi/qapi-dealloc-visitor.c
+++ b/qapi/qapi-dealloc-visitor.c
@@ -22,9 +22,10 @@ struct QapiDeallocVisitor
     Visitor visitor;
 };
 
-static void qapi_dealloc_start_struct(Visitor *v, const char *name, void **obj,
+static bool qapi_dealloc_start_struct(Visitor *v, const char *name, void **obj,
                                       size_t unused, Error **errp)
 {
+    return true;
 }
 
 static void qapi_dealloc_end_struct(Visitor *v, void **obj)
@@ -41,10 +42,11 @@ static void qapi_dealloc_end_alternate(Visitor *v, void **obj)
     }
 }
 
-static void qapi_dealloc_start_list(Visitor *v, const char *name,
+static bool qapi_dealloc_start_list(Visitor *v, const char *name,
                                     GenericList **list, size_t size,
                                     Error **errp)
 {
+    return true;
 }
 
 static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList *tail,
@@ -59,48 +61,55 @@ static void qapi_dealloc_end_list(Visitor *v, void **obj)
 {
 }
 
-static void qapi_dealloc_type_str(Visitor *v, const char *name, char **obj,
+static bool qapi_dealloc_type_str(Visitor *v, const char *name, char **obj,
                                   Error **errp)
 {
     if (obj) {
         g_free(*obj);
     }
+    return true;
 }
 
-static void qapi_dealloc_type_int64(Visitor *v, const char *name, int64_t *obj,
+static bool qapi_dealloc_type_int64(Visitor *v, const char *name, int64_t *obj,
                                     Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_uint64(Visitor *v, const char *name,
+static bool qapi_dealloc_type_uint64(Visitor *v, const char *name,
                                      uint64_t *obj, Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_bool(Visitor *v, const char *name, bool *obj,
+static bool qapi_dealloc_type_bool(Visitor *v, const char *name, bool *obj,
                                    Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_number(Visitor *v, const char *name, double *obj,
+static bool qapi_dealloc_type_number(Visitor *v, const char *name, double *obj,
                                      Error **errp)
 {
+    return true;
 }
 
-static void qapi_dealloc_type_anything(Visitor *v, const char *name,
+static bool qapi_dealloc_type_anything(Visitor *v, const char *name,
                                        QObject **obj, Error **errp)
 {
     if (obj) {
         qobject_unref(*obj);
     }
+    return true;
 }
 
-static void qapi_dealloc_type_null(Visitor *v, const char *name,
+static bool qapi_dealloc_type_null(Visitor *v, const char *name,
                                    QNull **obj, Error **errp)
 {
     if (obj) {
         qobject_unref(*obj);
     }
+    return true;
 }
 
 static void qapi_dealloc_free(Visitor *v)