/**
* g_object_info_find_vfunc:
* @info: a #GIObjectInfo
* @name: The name of a virtual function to find.
*
* Locate a virtual function slot with name @name. Note that the namespace
* for virtuals is distinct from that of methods; there may or may not be
* a concrete method associated for a virtual. If there is one, it may
* be retrieved using g_vfunc_info_get_invoker(), otherwise %NULL will be
* returned.
* See the documentation for g_vfunc_info_get_invoker() for more
* information on invoking virtuals.
*
* Returns: (transfer full): the #GIVFuncInfo, or %NULL. Free it with
* g_base_info_unref() when done.
*/
GIVFuncInfo *
g_object_info_find_vfunc (GIObjectInfo *info,
const gchar *name)
{
gint offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
header = (Header *)rinfo->typelib->data;
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
offset = rinfo->offset + header->object_blob_size
+ (blob->n_interfaces + blob->n_interfaces % 2) * 2
+ blob->n_fields * header->field_blob_size
+ blob->n_field_callbacks * header->callback_blob_size
+ blob->n_properties * header->property_blob_size
+ blob->n_methods * header->function_blob_size
+ blob->n_signals * header->signal_blob_size;
return _g_base_info_find_vfunc (rinfo, offset, blob->n_vfuncs, name);
}
/**
* g_object_info_get_constant:
* @info: a #GIObjectInfo
* @n: index of constant to get
*
* Obtain an object type constant at index @n.
*
* Returns: (transfer full): the #GIConstantInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIConstantInfo *
g_object_info_get_constant (GIObjectInfo *info,
gint n)
{
gint offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
header = (Header *)rinfo->typelib->data;
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
offset = g_object_info_get_field_offset(info, blob->n_fields)
+ blob->n_properties * header->property_blob_size
+ blob->n_methods * header->function_blob_size
+ blob->n_signals * header->signal_blob_size
+ blob->n_vfuncs * header->vfunc_blob_size
+ n * header->constant_blob_size;
return (GIConstantInfo *) g_info_new (GI_INFO_TYPE_CONSTANT, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* g_object_info_get_vfunc:
* @info: a #GIObjectInfo
* @n: index of virtual function to get
*
* Obtain an object type virtual function at index @n.
*
* Returns: (transfer full): the #GIVFuncInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIVFuncInfo *
g_object_info_get_vfunc (GIObjectInfo *info,
gint n)
{
gint offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
header = (Header *)rinfo->typelib->data;
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
offset = rinfo->offset + header->object_blob_size
+ (blob->n_interfaces + blob->n_interfaces % 2) * 2
+ blob->n_fields * header->field_blob_size
+ blob->n_field_callbacks * header->callback_blob_size
+ blob->n_properties * header->property_blob_size
+ blob->n_methods * header->function_blob_size
+ blob->n_signals * header->signal_blob_size
+ n * header->vfunc_blob_size;
return (GIVFuncInfo *) g_info_new (GI_INFO_TYPE_VFUNC, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/* Creates marshaller closure for specified fundamental object type.
If specified object does not have custom setvalue/getvalue
functions registered, returns nil. Signature is:
marshaller = marshal.fundamental(gtype) */
static int
marshal_fundamental (lua_State *L)
{
/* Find associated baseinfo. */
GIBaseInfo *info = g_irepository_find_by_gtype (NULL,
lgi_type_get_gtype (L, 1));
if (info)
{
lgi_gi_info_new (L, info);
if (GI_IS_OBJECT_INFO (info) && g_object_info_get_fundamental (info))
{
GIObjectInfoGetValueFunction get_value =
lgi_object_get_function_ptr (info,
g_object_info_get_get_value_function);
GIObjectInfoSetValueFunction set_value =
lgi_object_get_function_ptr (info,
g_object_info_get_set_value_function);
if (get_value && set_value)
{
lua_pushlightuserdata (L, get_value);
lua_pushlightuserdata (L, set_value);
lua_pushcclosure (L, marshal_fundamental_marshaller, 2);
return 1;
}
}
}
lua_pushnil (L);
return 1;
}
/**
* g_object_info_get_set_value_function_pointer: (skip)
* @info: a #GIObjectInfo
*
* Obtain a pointer to a function which can be used to
* set a GValue given an instance of this object type.
* This takes derivation into account and will reversely traverse
* the base classes of this type, starting at the top type.
*
* Returns: the function pointer or %NULL
*/
GIObjectInfoSetValueFunction
g_object_info_get_set_value_function_pointer (GIObjectInfo *info)
{
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
return (GIObjectInfoSetValueFunction)_get_func(info, (SymbolGetter)g_object_info_get_set_value_function);
}
/**
* g_object_info_get_n_properties:
* @info: a #GIObjectInfo
*
* Obtain the number of properties that this object type has.
*
* Returns: number of properties
*/
gint
g_object_info_get_n_properties (GIObjectInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), 0);
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
return blob->n_properties;
}
/**
* g_object_info_get_type_init:
* @info: a #GIObjectInfo
*
* Obtain the function which when called will return the GType
* function for which this object type is registered.
*
* Returns: the type init function
*/
const gchar *
g_object_info_get_type_init (GIObjectInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
return g_typelib_get_string (rinfo->typelib, blob->gtype_init);
}
/**
* g_object_info_get_fundamental:
* @info: a #GIObjectInfo
*
* Obtain if the object type is of a fundamental type which is not
* G_TYPE_OBJECT. This is mostly for supporting GstMiniObject.
*
* Returns: %TRUE if the object type is a fundamental type
*/
gboolean
g_object_info_get_fundamental (GIObjectInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, FALSE);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), FALSE);
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
return blob->fundamental != 0;
}
/**
* g_object_info_get_field:
* @info: a #GIObjectInfo
* @n: index of field to get
*
* Obtain an object type field at index @n.
*
* Returns: (transfer full): the #GIFieldInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIFieldInfo *
g_object_info_get_field (GIObjectInfo *info,
gint n)
{
gint offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
offset = g_object_info_get_field_offset(info, n);
return (GIFieldInfo *) g_info_new (GI_INFO_TYPE_FIELD, (GIBaseInfo*)info, rinfo->typelib, offset);
}
/**
* g_object_info_get_interface:
* @info: a #GIObjectInfo
* @n: index of interface to get
*
* Obtain an object type interface at index @n.
*
* Returns: (transfer full): the #GIInterfaceInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIInterfaceInfo *
g_object_info_get_interface (GIObjectInfo *info,
gint n)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
return (GIInterfaceInfo *) _g_info_from_entry (rinfo->repository,
rinfo->typelib, blob->interfaces[n]);
}
/**
* g_object_info_get_set_value_function:
* @info: a #GIObjectInfo
*
* Obtain the symbol name of the function that should be called to convert
* set a GValue giving an object instance pointer of this object type.
* I's mainly used fundamental types. The type signature for the symbol
* is %GIObjectInfoSetValueFunction, to fetch the function pointer
* see g_object_info_get_set_value_function().
*
* Returns: the symbol or %NULL
*/
const char *
g_object_info_get_set_value_function (GIObjectInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
if (blob->set_value_func)
return g_typelib_get_string (rinfo->typelib, blob->set_value_func);
return NULL;
}
/**
* g_object_info_get_parent:
* @info: a #GIObjectInfo
*
* Obtain the parent of the object type.
*
* Returns: (transfer full): the #GIObjectInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIObjectInfo *
g_object_info_get_parent (GIObjectInfo *info)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
if (blob->parent)
return (GIObjectInfo *) _g_info_from_entry (rinfo->repository,
rinfo->typelib, blob->parent);
else
return NULL;
}
/**
* g_object_info_find_method:
* @info: a #GIObjectInfo
* @name: name of method to obtain
*
* Obtain a method of the object type given a @name. %NULL will be
* returned if there's no method available with that name.
*
* Returns: (transfer full): the #GIFunctionInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIFunctionInfo *
g_object_info_find_method (GIObjectInfo *info,
const gchar *name)
{
gint offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, 0);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), 0);
header = (Header *)rinfo->typelib->data;
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
offset = g_object_info_get_field_offset(info, blob->n_fields)
+ blob->n_properties * header->property_blob_size;
return _g_base_info_find_method ((GIBaseInfo*)info, offset, blob->n_methods, name);
}
/**
* g_object_info_get_property:
* @info: a #GIObjectInfo
* @n: index of property to get
*
* Obtain an object type property at index @n.
*
* Returns: (transfer full): the #GIPropertyInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIPropertyInfo *
g_object_info_get_property (GIObjectInfo *info,
gint n)
{
gint offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header;
ObjectBlob *blob;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
header = (Header *)rinfo->typelib->data;
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
offset = g_object_info_get_field_offset(info, blob->n_fields)
+ n * header->property_blob_size;
return (GIPropertyInfo *) g_info_new (GI_INFO_TYPE_PROPERTY, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
static GISignalInfo *
_pygi_lookup_signal_from_g_type (GType g_type,
const gchar *signal_name)
{
GIRepository *repository;
GIBaseInfo *info;
GISignalInfo *signal_info = NULL;
repository = g_irepository_get_default();
info = g_irepository_find_by_gtype (repository, g_type);
if (info == NULL)
return NULL;
if (GI_IS_OBJECT_INFO (info))
signal_info = g_object_info_find_signal ((GIObjectInfo *) info,
signal_name);
else if (GI_IS_INTERFACE_INFO (info))
signal_info = g_interface_info_find_signal ((GIInterfaceInfo *) info,
signal_name);
g_base_info_unref (info);
return signal_info;
}
