qapi: Use QNull for a more regular visit_type_null()
Make visit_type_null() take an @obj argument like its buddies. This
helps keep the next commit simple.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
diff --git a/qapi/qapi-clone-visitor.c b/qapi/qapi-clone-visitor.c
index ed16d3a..d8b6279 100644
--- a/qapi/qapi-clone-visitor.c
+++ b/qapi/qapi-clone-visitor.c
@@ -127,12 +127,13 @@
/* Value was already cloned by g_memdup() */
}
-static void qapi_clone_type_null(Visitor *v, const char *name, Error **errp)
+static void qapi_clone_type_null(Visitor *v, const char *name, QNull **obj,
+ Error **errp)
{
QapiCloneVisitor *qcv = to_qcv(v);
assert(qcv->depth);
- /* Nothing to do */
+ *obj = qnull();
}
static void qapi_clone_free(Visitor *v)
diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c
index fd6f9fb..ed70a01 100644
--- a/qapi/qapi-dealloc-visitor.c
+++ b/qapi/qapi-dealloc-visitor.c
@@ -103,8 +103,12 @@
}
}
-static void qapi_dealloc_type_null(Visitor *v, const char *name, Error **errp)
+static void qapi_dealloc_type_null(Visitor *v, const char *name,
+ QNull **obj, Error **errp)
{
+ if (obj) {
+ QDECREF(*obj);
+ }
}
static void qapi_dealloc_free(Visitor *v)
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index 935a2c5..ed6d2af 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -325,10 +325,11 @@
error_propagate(errp, err);
}
-void visit_type_null(Visitor *v, const char *name, Error **errp)
+void visit_type_null(Visitor *v, const char *name, QNull **obj,
+ Error **errp)
{
- trace_visit_type_null(v, name);
- v->type_null(v, name, errp);
+ trace_visit_type_null(v, name, obj);
+ v->type_null(v, name, obj, errp);
}
static void output_type_enum(Visitor *v, const char *name, int *obj,
diff --git a/qapi/qobject-input-visitor.c b/qapi/qobject-input-visitor.c
index 35aff78..ee9e47d 100644
--- a/qapi/qobject-input-visitor.c
+++ b/qapi/qobject-input-visitor.c
@@ -587,11 +587,13 @@
*obj = qobj;
}
-static void qobject_input_type_null(Visitor *v, const char *name, Error **errp)
+static void qobject_input_type_null(Visitor *v, const char *name,
+ QNull **obj, Error **errp)
{
QObjectInputVisitor *qiv = to_qiv(v);
QObject *qobj = qobject_input_get_object(qiv, name, true, errp);
+ *obj = NULL;
if (!qobj) {
return;
}
@@ -599,7 +601,9 @@
if (qobject_type(qobj) != QTYPE_QNULL) {
error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
full_name(qiv, name), "null");
+ return;
}
+ *obj = qnull();
}
static void qobject_input_type_size_keyval(Visitor *v, const char *name,
diff --git a/qapi/qobject-output-visitor.c b/qapi/qobject-output-visitor.c
index 398dcb5..d325163 100644
--- a/qapi/qobject-output-visitor.c
+++ b/qapi/qobject-output-visitor.c
@@ -187,7 +187,8 @@
qobject_output_add_obj(qov, name, *obj);
}
-static void qobject_output_type_null(Visitor *v, const char *name, Error **errp)
+static void qobject_output_type_null(Visitor *v, const char *name,
+ QNull **obj, Error **errp)
{
QObjectOutputVisitor *qov = to_qov(v);
qobject_output_add(qov, name, qnull());
diff --git a/qapi/string-input-visitor.c b/qapi/string-input-visitor.c
index 63ae115..67a0a4a 100644
--- a/qapi/string-input-visitor.c
+++ b/qapi/string-input-visitor.c
@@ -326,14 +326,20 @@
*obj = val;
}
-static void parse_type_null(Visitor *v, const char *name, Error **errp)
+static void parse_type_null(Visitor *v, const char *name, QNull **obj,
+ Error **errp)
{
StringInputVisitor *siv = to_siv(v);
+ *obj = NULL;
+
if (!siv->string || siv->string[0]) {
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name ? name : "null",
"null");
+ return;
}
+
+ *obj = qnull();
}
static void string_input_free(Visitor *v)
diff --git a/qapi/string-output-visitor.c b/qapi/string-output-visitor.c
index af649e1..7ab6446 100644
--- a/qapi/string-output-visitor.c
+++ b/qapi/string-output-visitor.c
@@ -256,7 +256,8 @@
string_output_set(sov, g_strdup_printf("%f", *obj));
}
-static void print_type_null(Visitor *v, const char *name, Error **errp)
+static void print_type_null(Visitor *v, const char *name, QNull **obj,
+ Error **errp)
{
StringOutputVisitor *sov = to_sov(v);
char *out;
diff --git a/qapi/trace-events b/qapi/trace-events
index 3b57aba..9e9008a 100644
--- a/qapi/trace-events
+++ b/qapi/trace-events
@@ -31,4 +31,4 @@
visit_type_str(void *v, const char *name, char **obj) "v=%p name=%s obj=%p"
visit_type_number(void *v, const char *name, double *obj) "v=%p name=%s obj=%p"
visit_type_any(void *v, const char *name, void *obj) "v=%p name=%s obj=%p"
-visit_type_null(void *v, const char *name) "v=%p name=%s"
+visit_type_null(void *v, const char *name, void *obj) "v=%p name=%s obj=%p"
