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/qbool.h" 13 #include "qapi/qmp/qnull.h" 14 #include "qapi/qmp/qnum.h" 15 #include "qapi/qmp/qdict.h" 16 #include "qapi/qmp/qlist.h" 17 #include "qapi/qmp/qstring.h" 18 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 28 static void (*qdestroy[QTYPE__MAX])(QObject *) = { 29 [QTYPE_NONE] = NULL, /* No such object exists */ 30 [QTYPE_QNULL] = NULL, /* qnull_ is indestructible */ 31 [QTYPE_QNUM] = qnum_destroy_obj, 32 [QTYPE_QSTRING] = qstring_destroy_obj, 33 [QTYPE_QDICT] = qdict_destroy_obj, 34 [QTYPE_QLIST] = qlist_destroy_obj, 35 [QTYPE_QBOOL] = qbool_destroy_obj, 36 }; 37 38 void qobject_destroy(QObject *obj) 39 { 40 assert(!obj->base.refcnt); 41 assert(QTYPE_QNULL < obj->base.type && obj->base.type < QTYPE__MAX); 42 qdestroy[obj->base.type](obj); 43 } 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 65 if (!x || !y || x->base.type != y->base.type) { 66 return false; 67 } 68 69 assert(QTYPE_NONE < x->base.type && x->base.type < QTYPE__MAX); 70 71 return qis_equal[x->base.type](x, y); 72 } 73