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qobject: Change qobject_to_json()'s value to GString

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qobject_to_json() and qobject_to_json_pretty() build a GString, then
covert it to QString.  Just one of the callers actually needs a
QString: qemu_rbd_parse_filename().  A few others need a string they
can modify: qmp_send_response(), qga's send_response(), to_json_str(),
and qmp_fd_vsend_fds().  The remainder just need a string.

Change qobject_to_json() and qobject_to_json_pretty() to return the
GString.

qemu_rbd_parse_filename() now has to convert to QString.  All others
save a QString temporary.  to_json_str() actually becomes a bit
simpler, because GString provides more convenient modification
functions.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201211171152.146877-6-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2020-12-11 18:11:37 +01:00
parent f1cc129df8
commit eab3a4678b
12 changed files with 79 additions and 93 deletions
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4
qom/object_interfaces.c
View file

@ -5,7 +5,6 @@
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qjson.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qobject-input-visitor.h"
#include "qom/object_interfaces.h"
#include "qemu/help_option.h"
@ -207,7 +206,8 @@ char *object_property_help(const char *name, const char *type,
g_string_append(str, description);
}
if (defval) {
g_autofree char *def_json = qstring_free(qobject_to_json(defval), TRUE);
g_autofree char *def_json = g_string_free(qobject_to_json(defval),
true);
g_string_append_printf(str, " (default: %s)", def_json);
}