qemu

FORK: QEMU emulator
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qlit.c (3240B)

      1 /*
      2  * QLit literal qobject
      3  *
      4  * Copyright IBM, Corp. 2009
      5  * Copyright (c) 2013, 2015, 2017 Red Hat Inc.
      6  *
      7  * Authors:
      8  *  Anthony Liguori   <aliguori@us.ibm.com>
      9  *  Markus Armbruster <armbru@redhat.com>
     10  *  Marc-André Lureau <marcandre.lureau@redhat.com>
     11  *
     12  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
     13  * See the COPYING.LIB file in the top-level directory.
     14  */
     15 
     16 #include "qemu/osdep.h"
     17 
     18 #include "qapi/qmp/qlit.h"
     19 #include "qapi/qmp/qbool.h"
     20 #include "qapi/qmp/qlist.h"
     21 #include "qapi/qmp/qnum.h"
     22 #include "qapi/qmp/qdict.h"
     23 #include "qapi/qmp/qstring.h"
     24 #include "qapi/qmp/qnull.h"
     25 
     26 static bool qlit_equal_qdict(const QLitObject *lhs, const QDict *qdict)
     27 {
     28     int i;
     29 
     30     for (i = 0; lhs->value.qdict[i].key; i++) {
     31         QObject *obj = qdict_get(qdict, lhs->value.qdict[i].key);
     32 
     33         if (!qlit_equal_qobject(&lhs->value.qdict[i].value, obj)) {
     34             return false;
     35         }
     36     }
     37 
     38     /* Note: the literal qdict must not contain duplicates, this is
     39      * considered a programming error and it isn't checked here. */
     40     if (qdict_size(qdict) != i) {
     41         return false;
     42     }
     43 
     44     return true;
     45 }
     46 
     47 static bool qlit_equal_qlist(const QLitObject *lhs, const QList *qlist)
     48 {
     49     QListEntry *e;
     50     int i = 0;
     51 
     52     QLIST_FOREACH_ENTRY(qlist, e) {
     53         QObject *obj = qlist_entry_obj(e);
     54 
     55         if (!qlit_equal_qobject(&lhs->value.qlist[i], obj)) {
     56             return false;
     57         }
     58         i++;
     59     }
     60 
     61     return !e && lhs->value.qlist[i].type == QTYPE_NONE;
     62 }
     63 
     64 bool qlit_equal_qobject(const QLitObject *lhs, const QObject *rhs)
     65 {
     66     if (!rhs || lhs->type != qobject_type(rhs)) {
     67         return false;
     68     }
     69 
     70     switch (lhs->type) {
     71     case QTYPE_QBOOL:
     72         return lhs->value.qbool == qbool_get_bool(qobject_to(QBool, rhs));
     73     case QTYPE_QNUM:
     74         return lhs->value.qnum ==  qnum_get_int(qobject_to(QNum, rhs));
     75     case QTYPE_QSTRING:
     76         return (strcmp(lhs->value.qstr,
     77                        qstring_get_str(qobject_to(QString, rhs))) == 0);
     78     case QTYPE_QDICT:
     79         return qlit_equal_qdict(lhs, qobject_to(QDict, rhs));
     80     case QTYPE_QLIST:
     81         return qlit_equal_qlist(lhs, qobject_to(QList, rhs));
     82     case QTYPE_QNULL:
     83         return true;
     84     default:
     85         break;
     86     }
     87 
     88     return false;
     89 }
     90 
     91 QObject *qobject_from_qlit(const QLitObject *qlit)
     92 {
     93     switch (qlit->type) {
     94     case QTYPE_QNULL:
     95         return QOBJECT(qnull());
     96     case QTYPE_QNUM:
     97         return QOBJECT(qnum_from_int(qlit->value.qnum));
     98     case QTYPE_QSTRING:
     99         return QOBJECT(qstring_from_str(qlit->value.qstr));
    100     case QTYPE_QDICT: {
    101         QDict *qdict = qdict_new();
    102         QLitDictEntry *e;
    103 
    104         for (e = qlit->value.qdict; e->key; e++) {
    105             qdict_put_obj(qdict, e->key, qobject_from_qlit(&e->value));
    106         }
    107         return QOBJECT(qdict);
    108     }
    109     case QTYPE_QLIST: {
    110         QList *qlist = qlist_new();
    111         QLitObject *e;
    112 
    113         for (e = qlit->value.qlist; e->type != QTYPE_NONE; e++) {
    114             qlist_append_obj(qlist, qobject_from_qlit(e));
    115         }
    116         return QOBJECT(qlist);
    117     }
    118     case QTYPE_QBOOL:
    119         return QOBJECT(qbool_from_bool(qlit->value.qbool));
    120     default:
    121         assert(0);
    122     }
    123 
    124     return NULL;
    125 }