qobject/qobject.c

   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 }