xref: /qemu/qobject/qobject.c (revision 2562755e)
1 /*
2  * QObject
3  *
4  * Copyright (C) 2015 Red Hat, Inc.
5  *
6  * This work is licensed under the terms of the GNU LGPL, version 2.1
7  * or later.  See the COPYING.LIB file in the top-level directory.
8  */
9 
10 #include "qemu/osdep.h"
11 #include "qemu-common.h"
12 #include "qapi/qmp/types.h"
13 
14 static void (*qdestroy[QTYPE__MAX])(QObject *) = {
15     [QTYPE_NONE] = NULL,               /* No such object exists */
16     [QTYPE_QNULL] = NULL,              /* qnull_ is indestructible */
17     [QTYPE_QNUM] = qnum_destroy_obj,
18     [QTYPE_QSTRING] = qstring_destroy_obj,
19     [QTYPE_QDICT] = qdict_destroy_obj,
20     [QTYPE_QLIST] = qlist_destroy_obj,
21     [QTYPE_QBOOL] = qbool_destroy_obj,
22 };
23 
24 void qobject_destroy(QObject *obj)
25 {
26     assert(!obj->refcnt);
27     assert(QTYPE_QNULL < obj->type && obj->type < QTYPE__MAX);
28     qdestroy[obj->type](obj);
29 }
30 
31 
32 static bool (*qis_equal[QTYPE__MAX])(const QObject *, const QObject *) = {
33     [QTYPE_NONE] = NULL,               /* No such object exists */
34     [QTYPE_QNULL] = qnull_is_equal,
35     [QTYPE_QNUM] = qnum_is_equal,
36     [QTYPE_QSTRING] = qstring_is_equal,
37     [QTYPE_QDICT] = qdict_is_equal,
38     [QTYPE_QLIST] = qlist_is_equal,
39     [QTYPE_QBOOL] = qbool_is_equal,
40 };
41 
42 bool qobject_is_equal(const QObject *x, const QObject *y)
43 {
44     /* We cannot test x == y because an object does not need to be
45      * equal to itself (e.g. NaN floats are not). */
46 
47     if (!x && !y) {
48         return true;
49     }
50 
51     if (!x || !y || x->type != y->type) {
52         return false;
53     }
54 
55     assert(QTYPE_NONE < x->type && x->type < QTYPE__MAX);
56 
57     return qis_equal[x->type](x, y);
58 }
59