glib/giobjectinfo.c
Colin Walters d01de67d02 g_object_info_find_method_using_interfaces: Fix crash if not found
If a method wasn't found, we'd try to unref NULL.
2010-12-06 11:14:53 -05:00

976 lines
26 KiB
C

/* GObject introspection: Object implementation
*
* Copyright (C) 2005 Matthias Clasen
* Copyright (C) 2008,2009 Red Hat, Inc.
*
* 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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#include <girepository.h>
#include "girepository-private.h"
#include "gitypelib-internal.h"
/**
* SECTION:giobjectinfo
* @Short_description: Struct representing a GObject
* @Title: GIObjectInfo
*
* GIObjectInfo represents a #GObject. This doesn't represent a specific
* instance of a GObject, instead this represent the object type (eg class).
*
* A GObject has methods, fields, properties, signals, interfaces, constants
* and virtual functions.
*
* <refsect1 id="gi-giobjectinfo.struct-hierarchy" role="struct_hierarchy">
* <title role="struct_hierarchy.title">Struct hierarchy</title>
* <synopsis>
* <link linkend="gi-GIBaseInfo">GIBaseInfo</link>
* +----<link linkend="gi-GIRegisteredTypeInfo">GIRegisteredTypeInfo</link>
* +----GIObjectInfo
* </synopsis>
* </refsect1>
*/
/**
* 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_get_abstract:
* @info: a #GIObjectInfo
*
* Obtain if the object type is an abstract type, eg if it cannot be
* instantiated
*
* Returns: %TRUE if the object type is abstract
*/
gboolean
g_object_info_get_abstract (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->abstract != 0;
}
/**
* 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_type_name:
* @info: a #GIObjectInfo
*
* Obtain the name of the objects class/type.
*
* Returns: name of the objects type
*/
const gchar *
g_object_info_get_type_name (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_name);
}
/**
* 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_n_interfaces:
* @info: a #GIObjectInfo
*
* Obtain the number of interfaces that this object type has.
*
* Returns: number of interfaces
*/
gint
g_object_info_get_n_interfaces (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_interfaces;
}
/**
* 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_n_fields:
* @info: a #GIObjectInfo
*
* Obtain the number of fields that this object type has.
*
* Returns: number of fields
*/
gint
g_object_info_get_n_fields (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_fields;
}
/**
* 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;
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
+ n * header->field_blob_size;
return (GIFieldInfo *) g_info_new (GI_INFO_TYPE_FIELD, (GIBaseInfo*)info, rinfo->typelib, offset);
}
/**
* 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_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 = rinfo->offset + header->object_blob_size
+ (blob->n_interfaces + blob->n_interfaces % 2) * 2
+ blob->n_fields * header->field_blob_size
+ n * header->property_blob_size;
return (GIPropertyInfo *) g_info_new (GI_INFO_TYPE_PROPERTY, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* g_object_info_get_n_methods:
* @info: a #GIObjectInfo
*
* Obtain the number of methods that this object type has.
*
* Returns: number of methods
*/
gint
g_object_info_get_n_methods (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_methods;
}
/**
* g_object_info_get_method:
* @info: a #GIObjectInfo
* @n: index of method to get
*
* Obtain an object type method at index @n.
*
* Returns: (transfer full): the #GIFunctionInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIFunctionInfo *
g_object_info_get_method (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_properties * header->property_blob_size
+ n * header->function_blob_size;
return (GIFunctionInfo *) g_info_new (GI_INFO_TYPE_FUNCTION, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* 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 = rinfo->offset + header->object_blob_size
+ (blob->n_interfaces + blob->n_interfaces % 2) * 2
+ blob->n_fields * header->field_blob_size +
+ blob->n_properties * header->property_blob_size;
return _g_base_info_find_method ((GIBaseInfo*)info, offset, blob->n_methods, name);
}
/**
* g_object_info_find_method_using_interfaces:
* @info: a #GIObjectInfo
* @name: name of method to obtain
* @implementor: (out) (transfer full): The implementor of the interface
*
* Obtain a method of the object given a @name, searching both the
* object @info and any interfaces it implements. %NULL will be
* returned if there's no method available with that name.
*
* Note that this function does *not* search parent classes; you will have
* to chain up if that's desired.
*
* Returns: (transfer full): the #GIFunctionInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GIFunctionInfo *
g_object_info_find_method_using_interfaces (GIObjectInfo *info,
const gchar *name,
GIObjectInfo **implementor)
{
GIFunctionInfo *result = NULL;
GIObjectInfo *implementor_result = NULL;
result = g_object_info_find_method (info, name);
if (result)
implementor_result = g_base_info_ref ((GIBaseInfo*) info);
if (result == NULL)
{
int n_interfaces;
int i;
n_interfaces = g_object_info_get_n_interfaces (info);
for (i = 0; i < n_interfaces; ++i)
{
GIInterfaceInfo *iface_info;
iface_info = g_object_info_get_interface (info, i);
result = g_interface_info_find_method (iface_info, name);
if (result != NULL)
{
implementor_result = iface_info;
break;
}
g_base_info_unref ((GIBaseInfo*) iface_info);
}
}
if (implementor)
*implementor = implementor_result;
else if (implementor_result != NULL)
g_base_info_unref ((GIBaseInfo*) implementor_result);
return result;
}
/**
* g_object_info_get_n_signals:
* @info: a #GIObjectInfo
*
* Obtain the number of signals that this object type has.
*
* Returns: number of signals
*/
gint
g_object_info_get_n_signals (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_signals;
}
/**
* g_object_info_get_signal:
* @info: a #GIObjectInfo
* @n: index of signal to get
*
* Obtain an object type signal at index @n.
*
* Returns: (transfer full): the #GISignalInfo. Free the struct by calling
* g_base_info_unref() when done.
*/
GISignalInfo *
g_object_info_get_signal (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_properties * header->property_blob_size
+ blob->n_methods * header->function_blob_size
+ n * header->signal_blob_size;
return (GISignalInfo *) g_info_new (GI_INFO_TYPE_SIGNAL, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* g_object_info_find_signal:
* @info: a #GIObjectInfo
* @name: Name of signal
*
* Returns: Info for the signal with name @name in @info, or %NULL on failure.
*/
GISignalInfo *
g_object_info_find_signal (GIObjectInfo *info,
const gchar *name)
{
gint n_signals;
gint i;
n_signals = g_object_info_get_n_signals (info);
for (i = 0; i < n_signals; i++)
{
GISignalInfo *siginfo = g_object_info_get_signal (info, i);
if (g_strcmp0 (g_base_info_get_name (siginfo), name) != 0)
{
g_base_info_unref ((GIBaseInfo*)siginfo);
continue;
}
return siginfo;
}
return NULL;
}
/**
* g_object_info_get_n_vfuncs:
* @info: a #GIObjectInfo
*
* Obtain the number of virtual functions that this object type has.
*
* Returns: number of virtual functions
*/
gint
g_object_info_get_n_vfuncs (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_vfuncs;
}
/**
* 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_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);
}
/**
* 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_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_n_constants:
* @info: a #GIObjectInfo
*
* Obtain the number of constants that this object type has.
*
* Returns: number of constants
*/
gint
g_object_info_get_n_constants (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_constants;
}
/**
* 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 = rinfo->offset + header->object_blob_size
+ (blob->n_interfaces + blob->n_interfaces % 2) * 2
+ blob->n_fields * header->field_blob_size
+ 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_class_struct:
* @info: a #GIObjectInfo
*
* Every #GObject has two structures; an instance structure and a class
* structure. This function returns the metadata for the class structure.
*
* Returns: (transfer full): the #GIStructInfo or %NULL. Free with
* g_base_info_unref() when done.
*/
GIStructInfo *
g_object_info_get_class_struct (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->gtype_struct)
return (GIStructInfo *) _g_info_from_entry (rinfo->repository,
rinfo->typelib, blob->gtype_struct);
else
return NULL;
}
typedef const char* (*SymbolGetter) (GIObjectInfo *info);
static void *
_get_func(GIObjectInfo *info,
SymbolGetter getter)
{
const char* symbol;
GSList *parents = NULL, *l;
GIObjectInfo *parent_info;
parent_info = info;
while (parent_info != NULL) {
parents = g_slist_prepend(parents, parent_info);
parent_info = g_object_info_get_parent(parent_info);
}
for (l = parents; l; l = l->next) {
GIObjectInfoRefFunction func;
parent_info = l->data;
symbol = getter(parent_info);
if (symbol == NULL)
continue;
if (g_typelib_symbol (((GIRealInfo *)parent_info)->typelib, symbol, (void**) &func)) {
g_slist_free(parents);
return func;
}
}
g_slist_free(parents);
return NULL;
}
/**
* g_object_info_get_ref_function:
* @info: a #GIObjectInfo
*
* Obtain the symbol name of the function that should be called to ref this
* object type. It's mainly used fundamental types. The type signature for
* the symbol is %GIObjectInfoRefFunction, to fetch the function pointer
* see g_object_info_get_ref_function().
*
* Returns: the symbol or %NULL
*/
const char *
g_object_info_get_ref_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->ref_func)
return g_typelib_get_string (rinfo->typelib, blob->ref_func);
return NULL;
}
/**
* g_object_info_get_ref_function_pointer: (skip)
* @info: a #GIObjectInfo
*
* Obtain a pointer to a function which can be used to
* increase the reference count 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
*/
GIObjectInfoRefFunction
g_object_info_get_ref_function_pointer (GIObjectInfo *info)
{
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
return (GIObjectInfoRefFunction)_get_func(info, (SymbolGetter)g_object_info_get_ref_function);
}
/**
* g_object_info_get_unref_function:
* @info: a #GIObjectInfo
*
* Obtain the symbol name of the function that should be called to unref this
* object type. It's mainly used fundamental types. The type signature for
* the symbol is %GIObjectInfoUnrefFunction, to fetch the function pointer
* see g_object_info_get_unref_function().
*
* Returns: the symbol or %NULL
*/
const char *
g_object_info_get_unref_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->unref_func)
return g_typelib_get_string (rinfo->typelib, blob->unref_func);
return NULL;
}
/**
* g_object_info_get_unref_function_pointer: (skip)
* @info: a #GIObjectInfo
*
* Obtain a pointer to a function which can be used to
* decrease the reference count 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
*/
GIObjectInfoUnrefFunction
g_object_info_get_unref_function_pointer (GIObjectInfo *info)
{
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
return (GIObjectInfoUnrefFunction)_get_func(info, (SymbolGetter)g_object_info_get_unref_function);
}
/**
* 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_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_get_value_function:
* @info: a #GIObjectInfo
*
* Obtain the symbol name of the function that should be called to convert
* an object instance pointer of this object type to a GValue.
* I's mainly used fundamental types. The type signature for the symbol
* is %GIObjectInfoGetValueFunction, to fetch the function pointer
* see g_object_info_get_get_value_function().
*
* Returns: the symbol or %NULL
*/
const char *
g_object_info_get_get_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->get_value_func)
return g_typelib_get_string (rinfo->typelib, blob->get_value_func);
return NULL;
}
/**
* g_object_info_get_get_value_function_pointer: (skip)
* @info: a #GIObjectInfo
*
* Obtain a pointer to a function which can be used to
* extract an instance of this object type out of a GValue.
* 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
*/
GIObjectInfoGetValueFunction
g_object_info_get_get_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 (GIObjectInfoGetValueFunction)_get_func(info, (SymbolGetter)g_object_info_get_get_value_function);
}