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/* json-gobject.h - JSON GObject integration
*
* This file is part of JSON-GLib
* Copyright (C) 2007 OpenedHand Ltd.
* Copyright (C) 2009 Intel Corp.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Author:
* Emmanuele Bassi <ebassi@linux.intel.com>
*/
#ifndef __JSON_GOBJECT_H__
#define __JSON_GOBJECT_H__
#include <json-glib/json-types.h>
G_BEGIN_DECLS
#define JSON_TYPE_SERIALIZABLE (json_serializable_get_type ())
#define JSON_SERIALIZABLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), JSON_TYPE_SERIALIZABLE, JsonSerializable))
#define JSON_IS_SERIALIZABLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), JSON_TYPE_SERIALIZABLE))
#define JSON_SERIALIZABLE_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), JSON_TYPE_SERIALIZABLE, JsonSerializableIface))
typedef struct _JsonSerializable JsonSerializable; /* dummy */
typedef struct _JsonSerializableIface JsonSerializableIface;
/**
* JsonSerializableIface:
* @serialize_property: virtual function for serializing an object property
* into JSON
* @deserialize_property: virtual function for deserializing JSON
* into an object property
* @find_property: virtual function for finding a property definition using
* its name
* @list_properties: virtual function for listing the installed property
* definitions
* @set_property: virtual function for setting a property
* @get_property: virtual function for getting a property
*
* Interface that allows serializing and deserializing object instances
* with properties storing complex data types.
*
* The [func@Json.gobject_from_data] and [func@Json.gobject_to_data]
* functions will check if the passed object type implements this interface,
* so it can also be used to override the default property serialization
* sequence.
*/
struct _JsonSerializableIface
{
/*< private >*/
GTypeInterface g_iface;
/*< public >*/
JsonNode *(* serialize_property) (JsonSerializable *serializable,
const gchar *property_name,
const GValue *value,
GParamSpec *pspec);
gboolean (* deserialize_property) (JsonSerializable *serializable,
const gchar *property_name,
GValue *value,
GParamSpec *pspec,
JsonNode *property_node);
GParamSpec * (* find_property) (JsonSerializable *serializable,
const char *name);
GParamSpec **(* list_properties) (JsonSerializable *serializable,
guint *n_pspecs);
void (* set_property) (JsonSerializable *serializable,
GParamSpec *pspec,
const GValue *value);
void (* get_property) (JsonSerializable *serializable,
GParamSpec *pspec,
GValue *value);
};
JSON_AVAILABLE_IN_1_0
GType json_serializable_get_type (void) G_GNUC_CONST;
JSON_AVAILABLE_IN_1_0
JsonNode *json_serializable_serialize_property (JsonSerializable *serializable,
const gchar *property_name,
const GValue *value,
GParamSpec *pspec);
JSON_AVAILABLE_IN_1_0
gboolean json_serializable_deserialize_property (JsonSerializable *serializable,
const gchar *property_name,
GValue *value,
GParamSpec *pspec,
JsonNode *property_node);
JSON_AVAILABLE_IN_1_0
GParamSpec * json_serializable_find_property (JsonSerializable *serializable,
const char *name);
JSON_AVAILABLE_IN_1_0
GParamSpec ** json_serializable_list_properties (JsonSerializable *serializable,
guint *n_pspecs);
JSON_AVAILABLE_IN_1_0
void json_serializable_set_property (JsonSerializable *serializable,
GParamSpec *pspec,
const GValue *value);
JSON_AVAILABLE_IN_1_0
void json_serializable_get_property (JsonSerializable *serializable,
GParamSpec *pspec,
GValue *value);
JSON_AVAILABLE_IN_1_0
JsonNode *json_serializable_default_serialize_property (JsonSerializable *serializable,
const gchar *property_name,
const GValue *value,
GParamSpec *pspec);
JSON_AVAILABLE_IN_1_0
gboolean json_serializable_default_deserialize_property (JsonSerializable *serializable,
const gchar *property_name,
GValue *value,
GParamSpec *pspec,
JsonNode *property_node);
/**
* JsonBoxedSerializeFunc:
* @boxed: a boxed data structure
*
* Serializes the passed `GBoxed` and stores it inside a `JsonNode`, for instance:
*
* ```c
* static JsonNode *
* my_point_serialize (gconstpointer boxed)
* {
* const MyPoint *point = boxed;
*
* g_autoptr(JsonBuilder) builder = json_builder_new ();
*
* json_builder_begin_object (builder);
* json_builder_set_member_name (builder, "x");
* json_builder_add_double_value (builder, point->x);
* json_builder_set_member_name (builder, "y");
* json_builder_add_double_value (builder, point->y);
* json_builder_end_object (builder);
*
* return json_builder_get_root (builder);
* }
* ```
*
* Return value: the newly created JSON node tree representing the boxed data
*
* Since: 0.10
*/
typedef JsonNode *(* JsonBoxedSerializeFunc) (gconstpointer boxed);
/**
* JsonBoxedDeserializeFunc:
* @node: a node tree representing a boxed data
*
* Deserializes the contents of the passed `JsonNode` into a `GBoxed`, for instance:
*
* ```c
* static gpointer
* my_point_deserialize (JsonNode *node)
* {
* double x = 0.0, y = 0.0;
*
* if (JSON_NODE_HOLDS_ARRAY (node))
* {
* JsonArray *array = json_node_get_array (node);
*
* if (json_array_get_length (array) == 2)
* {
* x = json_array_get_double_element (array, 0);
* y = json_array_get_double_element (array, 1);
* }
* }
* else if (JSON_NODE_HOLDS_OBJECT (node))
* {
* JsonObject *obj = json_node_get_object (node);
*
* x = json_object_get_double_member_with_default (obj, "x", 0.0);
* y = json_object_get_double_member_with_default (obj, "y", 0.0);
* }
*
* // my_point_new() is defined elsewhere
* return my_point_new (x, y);
* }
* ```
*
* Return value: the newly created boxed structure
*
* Since: 0.10
*/
typedef gpointer (* JsonBoxedDeserializeFunc) (JsonNode *node);
JSON_AVAILABLE_IN_1_0
void json_boxed_register_serialize_func (GType gboxed_type,
JsonNodeType node_type,
JsonBoxedSerializeFunc serialize_func);
JSON_AVAILABLE_IN_1_0
void json_boxed_register_deserialize_func (GType gboxed_type,
JsonNodeType node_type,
JsonBoxedDeserializeFunc deserialize_func);
JSON_AVAILABLE_IN_1_0
gboolean json_boxed_can_serialize (GType gboxed_type,
JsonNodeType *node_type);
JSON_AVAILABLE_IN_1_0
gboolean json_boxed_can_deserialize (GType gboxed_type,
JsonNodeType node_type);
JSON_AVAILABLE_IN_1_0
JsonNode *json_boxed_serialize (GType gboxed_type,
gconstpointer boxed);
JSON_AVAILABLE_IN_1_0
gpointer json_boxed_deserialize (GType gboxed_type,
JsonNode *node);
JSON_AVAILABLE_IN_1_0
JsonNode *json_gobject_serialize (GObject *gobject);
JSON_AVAILABLE_IN_1_0
GObject * json_gobject_deserialize (GType gtype,
JsonNode *node);
JSON_AVAILABLE_IN_1_0
GObject * json_gobject_from_data (GType gtype,
const gchar *data,
gssize length,
GError **error);
JSON_AVAILABLE_IN_1_0
gchar * json_gobject_to_data (GObject *gobject,
gsize *length);
JSON_DEPRECATED_IN_1_0_FOR(json_gobject_from_data)
GObject * json_construct_gobject (GType gtype,
const gchar *data,
gsize length,
GError **error);
JSON_DEPRECATED_IN_1_0_FOR(json_gobject_to_data)
gchar * json_serialize_gobject (GObject *gobject,
gsize *length) G_GNUC_MALLOC;
#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
G_DEFINE_AUTOPTR_CLEANUP_FUNC (JsonSerializable, g_object_unref)
#endif
G_END_DECLS
#endif /* __JSON_GOBJECT_H__ */