4 * Copyright IBM, Corp. 2011
7 * Anthony Liguori <aliguori@us.ibm.com>
9 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
10 * See the COPYING.LIB file in the top-level directory.
14 #include "qmp-input-visitor.h"
15 #include "qapi/qapi-visit-impl.h"
16 #include "qemu-queue.h"
17 #include "qemu-common.h"
18 #include "qemu-objects.h"
21 #define QIV_STACK_SIZE 1024
23 typedef struct StackObject
26 const QListEntry
*entry
;
29 struct QmpInputVisitor
33 StackObject stack
[QIV_STACK_SIZE
];
37 static QmpInputVisitor
*to_qiv(Visitor
*v
)
39 return container_of(v
, QmpInputVisitor
, visitor
);
42 static const QObject
*qmp_input_get_object(QmpInputVisitor
*qiv
,
47 if (qiv
->nb_stack
== 0) {
50 qobj
= qiv
->stack
[qiv
->nb_stack
- 1].obj
;
54 if (name
&& qobject_type(qobj
) == QTYPE_QDICT
) {
55 return qdict_get(qobject_to_qdict(qobj
), name
);
56 } else if (qiv
->nb_stack
> 0 && qobject_type(qobj
) == QTYPE_QLIST
) {
57 return qlist_entry_obj(qiv
->stack
[qiv
->nb_stack
- 1].entry
);
64 static void qmp_input_push(QmpInputVisitor
*qiv
, const QObject
*obj
, Error
**errp
)
66 qiv
->stack
[qiv
->nb_stack
].obj
= obj
;
67 if (qobject_type(obj
) == QTYPE_QLIST
) {
68 qiv
->stack
[qiv
->nb_stack
].entry
= qlist_first(qobject_to_qlist(obj
));
72 if (qiv
->nb_stack
>= QIV_STACK_SIZE
) {
73 error_set(errp
, QERR_BUFFER_OVERRUN
);
78 static void qmp_input_pop(QmpInputVisitor
*qiv
, Error
**errp
)
80 assert(qiv
->nb_stack
> 0);
84 static void qmp_input_start_struct(Visitor
*v
, void **obj
, const char *kind
,
85 const char *name
, size_t size
, Error
**errp
)
87 QmpInputVisitor
*qiv
= to_qiv(v
);
88 const QObject
*qobj
= qmp_input_get_object(qiv
, name
);
91 if (!qobj
|| qobject_type(qobj
) != QTYPE_QDICT
) {
92 error_set(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
97 qmp_input_push(qiv
, qobj
, &err
);
99 error_propagate(errp
, err
);
104 *obj
= g_malloc0(size
);
108 static void qmp_input_end_struct(Visitor
*v
, Error
**errp
)
110 QmpInputVisitor
*qiv
= to_qiv(v
);
112 qmp_input_pop(qiv
, errp
);
115 static void qmp_input_start_list(Visitor
*v
, const char *name
, Error
**errp
)
117 QmpInputVisitor
*qiv
= to_qiv(v
);
118 const QObject
*qobj
= qmp_input_get_object(qiv
, name
);
120 if (!qobj
|| qobject_type(qobj
) != QTYPE_QLIST
) {
121 error_set(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
126 qmp_input_push(qiv
, qobj
, errp
);
129 static GenericList
*qmp_input_next_list(Visitor
*v
, GenericList
**list
,
132 QmpInputVisitor
*qiv
= to_qiv(v
);
134 StackObject
*so
= &qiv
->stack
[qiv
->nb_stack
- 1];
136 if (so
->entry
== NULL
) {
140 entry
= g_malloc0(sizeof(*entry
));
142 so
->entry
= qlist_next(so
->entry
);
143 if (so
->entry
== NULL
) {
147 (*list
)->next
= entry
;
153 static void qmp_input_end_list(Visitor
*v
, Error
**errp
)
155 QmpInputVisitor
*qiv
= to_qiv(v
);
157 qmp_input_pop(qiv
, errp
);
160 static void qmp_input_type_int(Visitor
*v
, int64_t *obj
, const char *name
,
163 QmpInputVisitor
*qiv
= to_qiv(v
);
164 const QObject
*qobj
= qmp_input_get_object(qiv
, name
);
166 if (!qobj
|| qobject_type(qobj
) != QTYPE_QINT
) {
167 error_set(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
172 *obj
= qint_get_int(qobject_to_qint(qobj
));
175 static void qmp_input_type_bool(Visitor
*v
, bool *obj
, const char *name
,
178 QmpInputVisitor
*qiv
= to_qiv(v
);
179 const QObject
*qobj
= qmp_input_get_object(qiv
, name
);
181 if (!qobj
|| qobject_type(qobj
) != QTYPE_QBOOL
) {
182 error_set(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
187 *obj
= qbool_get_int(qobject_to_qbool(qobj
));
190 static void qmp_input_type_str(Visitor
*v
, char **obj
, const char *name
,
193 QmpInputVisitor
*qiv
= to_qiv(v
);
194 const QObject
*qobj
= qmp_input_get_object(qiv
, name
);
196 if (!qobj
|| qobject_type(qobj
) != QTYPE_QSTRING
) {
197 error_set(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
202 *obj
= g_strdup(qstring_get_str(qobject_to_qstring(qobj
)));
205 static void qmp_input_type_number(Visitor
*v
, double *obj
, const char *name
,
208 QmpInputVisitor
*qiv
= to_qiv(v
);
209 const QObject
*qobj
= qmp_input_get_object(qiv
, name
);
211 if (!qobj
|| qobject_type(qobj
) != QTYPE_QFLOAT
) {
212 error_set(errp
, QERR_INVALID_PARAMETER_TYPE
, name
? name
: "null",
217 *obj
= qfloat_get_double(qobject_to_qfloat(qobj
));
220 static void qmp_input_start_optional(Visitor
*v
, bool *present
,
221 const char *name
, Error
**errp
)
223 QmpInputVisitor
*qiv
= to_qiv(v
);
224 const QObject
*qobj
= qmp_input_get_object(qiv
, name
);
234 Visitor
*qmp_input_get_visitor(QmpInputVisitor
*v
)
239 void qmp_input_visitor_cleanup(QmpInputVisitor
*v
)
241 qobject_decref(v
->obj
);
245 QmpInputVisitor
*qmp_input_visitor_new(QObject
*obj
)
249 v
= g_malloc0(sizeof(*v
));
251 v
->visitor
.start_struct
= qmp_input_start_struct
;
252 v
->visitor
.end_struct
= qmp_input_end_struct
;
253 v
->visitor
.start_list
= qmp_input_start_list
;
254 v
->visitor
.next_list
= qmp_input_next_list
;
255 v
->visitor
.end_list
= qmp_input_end_list
;
256 v
->visitor
.type_enum
= input_type_enum
;
257 v
->visitor
.type_int
= qmp_input_type_int
;
258 v
->visitor
.type_bool
= qmp_input_type_bool
;
259 v
->visitor
.type_str
= qmp_input_type_str
;
260 v
->visitor
.type_number
= qmp_input_type_number
;
261 v
->visitor
.start_optional
= qmp_input_start_optional
;
264 qobject_incref(v
->obj
);