Eric Blake | 55e1819 | 2015-12-01 22:20:45 -0700 | [diff] [blame] | 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 | |
Peter Maydell | f2ad72b | 2016-01-29 17:50:01 +0000 | [diff] [blame] | 10 | #include "qemu/osdep.h" |
Markus Armbruster | 6b67395 | 2018-02-01 12:18:35 +0100 | [diff] [blame] | 11 | #include "qapi/qmp/qbool.h" |
Markus Armbruster | 15280c3 | 2018-02-01 12:18:36 +0100 | [diff] [blame] | 12 | #include "qapi/qmp/qnull.h" |
| 13 | #include "qapi/qmp/qnum.h" |
Markus Armbruster | 6b67395 | 2018-02-01 12:18:35 +0100 | [diff] [blame] | 14 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | 47e6b29 | 2018-02-01 12:18:38 +0100 | [diff] [blame] | 15 | #include "qapi/qmp/qlist.h" |
Markus Armbruster | 6b67395 | 2018-02-01 12:18:35 +0100 | [diff] [blame] | 16 | #include "qapi/qmp/qstring.h" |
Markus Armbruster | 80d7112 | 2020-12-11 18:11:40 +0100 | [diff] [blame] | 17 | #include "qobject-internal.h" |
Eric Blake | 55e1819 | 2015-12-01 22:20:45 -0700 | [diff] [blame] | 18 | |
Marc-André Lureau | 7ee9edf | 2018-04-19 17:01:41 +0200 | [diff] [blame] | 19 | QEMU_BUILD_BUG_MSG( |
| 20 | offsetof(QNull, base) != 0 || |
| 21 | offsetof(QNum, base) != 0 || |
| 22 | offsetof(QString, base) != 0 || |
| 23 | offsetof(QDict, base) != 0 || |
| 24 | offsetof(QList, base) != 0 || |
| 25 | offsetof(QBool, base) != 0, |
| 26 | "base qobject must be at offset 0"); |
| 27 | |
Eric Blake | 7264f5c | 2015-12-01 22:20:47 -0700 | [diff] [blame] | 28 | static void (*qdestroy[QTYPE__MAX])(QObject *) = { |
Eric Blake | 55e1819 | 2015-12-01 22:20:45 -0700 | [diff] [blame] | 29 | [QTYPE_NONE] = NULL, /* No such object exists */ |
| 30 | [QTYPE_QNULL] = NULL, /* qnull_ is indestructible */ |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 31 | [QTYPE_QNUM] = qnum_destroy_obj, |
Eric Blake | 55e1819 | 2015-12-01 22:20:45 -0700 | [diff] [blame] | 32 | [QTYPE_QSTRING] = qstring_destroy_obj, |
| 33 | [QTYPE_QDICT] = qdict_destroy_obj, |
| 34 | [QTYPE_QLIST] = qlist_destroy_obj, |
Eric Blake | 55e1819 | 2015-12-01 22:20:45 -0700 | [diff] [blame] | 35 | [QTYPE_QBOOL] = qbool_destroy_obj, |
| 36 | }; |
| 37 | |
| 38 | void qobject_destroy(QObject *obj) |
| 39 | { |
Marc-André Lureau | 3d3eaca | 2018-04-19 17:01:42 +0200 | [diff] [blame] | 40 | assert(!obj->base.refcnt); |
| 41 | assert(QTYPE_QNULL < obj->base.type && obj->base.type < QTYPE__MAX); |
| 42 | qdestroy[obj->base.type](obj); |
Eric Blake | 55e1819 | 2015-12-01 22:20:45 -0700 | [diff] [blame] | 43 | } |
Max Reitz | b38dd67 | 2017-11-14 19:01:25 +0100 | [diff] [blame] | 44 | |
| 45 | |
| 46 | static bool (*qis_equal[QTYPE__MAX])(const QObject *, const QObject *) = { |
| 47 | [QTYPE_NONE] = NULL, /* No such object exists */ |
| 48 | [QTYPE_QNULL] = qnull_is_equal, |
| 49 | [QTYPE_QNUM] = qnum_is_equal, |
| 50 | [QTYPE_QSTRING] = qstring_is_equal, |
| 51 | [QTYPE_QDICT] = qdict_is_equal, |
| 52 | [QTYPE_QLIST] = qlist_is_equal, |
| 53 | [QTYPE_QBOOL] = qbool_is_equal, |
| 54 | }; |
| 55 | |
| 56 | bool qobject_is_equal(const QObject *x, const QObject *y) |
| 57 | { |
| 58 | /* We cannot test x == y because an object does not need to be |
| 59 | * equal to itself (e.g. NaN floats are not). */ |
| 60 | |
| 61 | if (!x && !y) { |
| 62 | return true; |
| 63 | } |
| 64 | |
Marc-André Lureau | 3d3eaca | 2018-04-19 17:01:42 +0200 | [diff] [blame] | 65 | if (!x || !y || x->base.type != y->base.type) { |
Max Reitz | b38dd67 | 2017-11-14 19:01:25 +0100 | [diff] [blame] | 66 | return false; |
| 67 | } |
| 68 | |
Marc-André Lureau | 3d3eaca | 2018-04-19 17:01:42 +0200 | [diff] [blame] | 69 | assert(QTYPE_NONE < x->base.type && x->base.type < QTYPE__MAX); |
Max Reitz | b38dd67 | 2017-11-14 19:01:25 +0100 | [diff] [blame] | 70 | |
Marc-André Lureau | 3d3eaca | 2018-04-19 17:01:42 +0200 | [diff] [blame] | 71 | return qis_equal[x->base.type](x, y); |
Max Reitz | b38dd67 | 2017-11-14 19:01:25 +0100 | [diff] [blame] | 72 | } |