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 "qapi/qmp/qbool.h" 12 #include "qapi/qmp/qnull.h" 13 #include "qapi/qmp/qnum.h" 14 #include "qapi/qmp/qdict.h" 15 #include "qapi/qmp/qlist.h" 16 #include "qapi/qmp/qstring.h" 17 18 QEMU_BUILD_BUG_MSG( 19 offsetof(QNull, base) != 0 || 20 offsetof(QNum, base) != 0 || 21 offsetof(QString, base) != 0 || 22 offsetof(QDict, base) != 0 || 23 offsetof(QList, base) != 0 || 24 offsetof(QBool, base) != 0, 25 "base qobject must be at offset 0"); 26 27 static void (*qdestroy[QTYPE__MAX])(QObject *) = { 28 [QTYPE_NONE] = NULL, /* No such object exists */ 29 [QTYPE_QNULL] = NULL, /* qnull_ is indestructible */ 30 [QTYPE_QNUM] = qnum_destroy_obj, 31 [QTYPE_QSTRING] = qstring_destroy_obj, 32 [QTYPE_QDICT] = qdict_destroy_obj, 33 [QTYPE_QLIST] = qlist_destroy_obj, 34 [QTYPE_QBOOL] = qbool_destroy_obj, 35 }; 36 37 void qobject_destroy(QObject *obj) 38 { 39 assert(!obj->base.refcnt); 40 assert(QTYPE_QNULL < obj->base.type && obj->base.type < QTYPE__MAX); 41 qdestroy[obj->base.type](obj); 42 } 43 44 45 static bool (*qis_equal[QTYPE__MAX])(const QObject *, const QObject *) = { 46 [QTYPE_NONE] = NULL, /* No such object exists */ 47 [QTYPE_QNULL] = qnull_is_equal, 48 [QTYPE_QNUM] = qnum_is_equal, 49 [QTYPE_QSTRING] = qstring_is_equal, 50 [QTYPE_QDICT] = qdict_is_equal, 51 [QTYPE_QLIST] = qlist_is_equal, 52 [QTYPE_QBOOL] = qbool_is_equal, 53 }; 54 55 bool qobject_is_equal(const QObject *x, const QObject *y) 56 { 57 /* We cannot test x == y because an object does not need to be 58 * equal to itself (e.g. NaN floats are not). */ 59 60 if (!x && !y) { 61 return true; 62 } 63 64 if (!x || !y || x->base.type != y->base.type) { 65 return false; 66 } 67 68 assert(QTYPE_NONE < x->base.type && x->base.type < QTYPE__MAX); 69 70 return qis_equal[x->base.type](x, y); 71 } 72