/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
* GObject introspection: Object implementation
*
* Copyright (C) 2005 Matthias Clasen
* Copyright (C) 2008,2009 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 "config.h"
#include <glib.h>
#include <girepository/girepository.h>
#include "gibaseinfo-private.h"
#include "girepository-private.h"
#include "gitypelib-internal.h"
#include "giobjectinfo.h"
/**
* GIObjectInfo:
*
* `GIObjectInfo` represents a classed type.
*
* Classed types in [type@GObject.Type] inherit from
* [type@GObject.TypeInstance]; the most common type is [class@GObject.Object].
*
* A `GIObjectInfo` doesn’t represent a specific instance of a classed type,
* instead this represent the object type (i.e. the class).
*
* A `GIObjectInfo` has methods, fields, properties, signals, interfaces,
* constants and virtual functions.
*
* Since: 2.80
*/
/**
* gi_object_info_get_field_offset:
* @info: a #GIObjectInfo
* @n: index of queried field
*
* Obtain the offset of the specified field.
*
* Returns: field offset, in bytes
* Since: 2.80
*/
static size_t
gi_object_info_get_field_offset (GIObjectInfo *info,
size_t n)
{
GIRealInfo *rinfo = (GIRealInfo *)info;
Header *header = (Header *)rinfo->typelib->data;
ObjectBlob *blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
uint32_t offset;
FieldBlob *field_blob;
offset = rinfo->offset + header->object_blob_size
+ (blob->n_interfaces + blob->n_interfaces % 2) * 2;
for (size_t i = 0; i < n; i++)
{
field_blob = (FieldBlob *)&rinfo->typelib->data[offset];
offset += header->field_blob_size;
if (field_blob->has_embedded_type)
offset += header->callback_blob_size;
}
return offset;
}
/**
* gi_object_info_get_parent:
* @info: a #GIObjectInfo
*
* Obtain the parent of the object type.
*
* Returns: (transfer full) (nullable): The `GIObjectInfo`. Free the struct by
* calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIObjectInfo *
gi_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 *) gi_info_from_entry (rinfo->repository,
rinfo->typelib, blob->parent);
else
return NULL;
}
/**
* gi_object_info_get_abstract:
* @info: a #GIObjectInfo
*
* Obtain if the object type is an abstract type, i.e. if it cannot be
* instantiated.
*
* Returns: `TRUE` if the object type is abstract
* Since: 2.80
*/
gboolean
gi_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;
}
/**
* gi_object_info_get_final:
* @info: a #GIObjectInfo
*
* Checks whether the object type is a final type, i.e. if it cannot
* be derived.
*
* Returns: `TRUE` if the object type is final
* Since: 2.80
*/
gboolean
gi_object_info_get_final (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->final_ != 0;
}
/**
* gi_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
* Since: 2.80
*/
gboolean
gi_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;
}
/**
* gi_object_info_get_type_name:
* @info: a #GIObjectInfo
*
* Obtain the name of the object’s class/type.
*
* Returns: name of the object’s type
* Since: 2.80
*/
const char *
gi_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 gi_typelib_get_string (rinfo->typelib, blob->gtype_name);
}
/**
* gi_object_info_get_type_init_function_name:
* @info: a #GIObjectInfo
*
* Obtain the name of the function which, when called, will return the
* [type@GObject.Type] for this object type.
*
* Returns: the type init function name
* Since: 2.80
*/
const char *
gi_object_info_get_type_init_function_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 gi_typelib_get_string (rinfo->typelib, blob->gtype_init);
}
/**
* gi_object_info_get_n_interfaces:
* @info: a #GIObjectInfo
*
* Obtain the number of interfaces that this object type has.
*
* Returns: number of interfaces
* Since: 2.80
*/
unsigned int
gi_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;
}
/**
* gi_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 [class@GIRepository.InterfaceInfo]. Free the
* struct by calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIInterfaceInfo *
gi_object_info_get_interface (GIObjectInfo *info,
unsigned int 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);
g_return_val_if_fail (n <= G_MAXUINT16, NULL);
blob = (ObjectBlob *)&rinfo->typelib->data[rinfo->offset];
return (GIInterfaceInfo *) gi_info_from_entry (rinfo->repository,
rinfo->typelib, blob->interfaces[n]);
}
/**
* gi_object_info_get_n_fields:
* @info: a #GIObjectInfo
*
* Obtain the number of fields that this object type has.
*
* Returns: number of fields
* Since: 2.80
*/
unsigned int
gi_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;
}
/**
* gi_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 [class@GIRepository.FieldInfo]. Free the struct
* by calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIFieldInfo *
gi_object_info_get_field (GIObjectInfo *info,
unsigned int n)
{
size_t offset;
GIRealInfo *rinfo = (GIRealInfo *)info;
g_return_val_if_fail (info != NULL, NULL);
g_return_val_if_fail (GI_IS_OBJECT_INFO (info), NULL);
g_return_val_if_fail (n <= G_MAXUINT16, NULL);
offset = gi_object_info_get_field_offset(info, n);
return (GIFieldInfo *) gi_info_new (GI_INFO_TYPE_FIELD, (GIBaseInfo*)info, rinfo->typelib, offset);
}
/**
* gi_object_info_get_n_properties:
* @info: a #GIObjectInfo
*
* Obtain the number of properties that this object type has.
*
* Returns: number of properties
* Since: 2.80
*/
unsigned int
gi_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;
}
/**
* gi_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 [class@GIRepository.PropertyInfo]. Free the
* struct by calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIPropertyInfo *
gi_object_info_get_property (GIObjectInfo *info,
unsigned int n)
{
size_t 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);
g_return_val_if_fail (n <= G_MAXUINT16, 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
+ n * header->property_blob_size;
return (GIPropertyInfo *) gi_info_new (GI_INFO_TYPE_PROPERTY, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* gi_object_info_get_n_methods:
* @info: a #GIObjectInfo
*
* Obtain the number of methods that this object type has.
*
* Returns: number of methods
* Since: 2.80
*/
unsigned int
gi_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;
}
/**
* gi_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 [class@GIRepository.FunctionInfo]. Free the
* struct by calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIFunctionInfo *
gi_object_info_get_method (GIObjectInfo *info,
unsigned int n)
{
size_t 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);
g_return_val_if_fail (n <= G_MAXUINT16, 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
+ n * header->function_blob_size;
return (GIFunctionInfo *) gi_info_new (GI_INFO_TYPE_FUNCTION, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* gi_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) (nullable): The [class@GIRepository.FunctionInfo],
* or `NULL` if no method could be found. Free the struct by calling
* [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIFunctionInfo *
gi_object_info_find_method (GIObjectInfo *info,
const char *name)
{
size_t 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_field_callbacks * header->callback_blob_size
+ blob->n_properties * header->property_blob_size;
return gi_base_info_find_method ((GIBaseInfo*)info, offset, blob->n_methods, name);
}
/**
* gi_object_info_find_method_using_interfaces:
* @info: a #GIObjectInfo
* @name: name of method to obtain
* @implementor: (out) (transfer full) (optional) (nullable): The implementor of
* the interface, or `NULL` to ignore. If no method is found, this will return
* `NULL`.
*
* 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) (nullable): The [class@GIRepository.FunctionInfo],
* or `NULL` if none was found. Free the struct by calling
* [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIFunctionInfo *
gi_object_info_find_method_using_interfaces (GIObjectInfo *info,
const char *name,
GIObjectInfo **implementor)
{
GIFunctionInfo *result = NULL;
GIObjectInfo *implementor_result = NULL;
result = gi_object_info_find_method (info, name);
if (result)
implementor_result = (GIObjectInfo *) gi_base_info_ref ((GIBaseInfo*) info);
if (result == NULL)
{
int n_interfaces;
int i;
n_interfaces = gi_object_info_get_n_interfaces (info);
for (i = 0; i < n_interfaces; ++i)
{
GIInterfaceInfo *iface_info;
iface_info = gi_object_info_get_interface (info, i);
result = gi_interface_info_find_method (iface_info, name);
if (result != NULL)
{
implementor_result = (GIObjectInfo *) iface_info;
break;
}
gi_base_info_unref ((GIBaseInfo*) iface_info);
}
}
if (implementor)
*implementor = implementor_result;
else if (implementor_result != NULL)
gi_base_info_unref ((GIBaseInfo*) implementor_result);
return result;
}
/**
* gi_object_info_get_n_signals:
* @info: a #GIObjectInfo
*
* Obtain the number of signals that this object type has.
*
* Returns: number of signals
* Since: 2.80
*/
unsigned int
gi_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;
}
/**
* gi_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 [class@GIRepository.SignalInfo]. Free the
* struct by calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GISignalInfo *
gi_object_info_get_signal (GIObjectInfo *info,
unsigned int n)
{
size_t 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);
g_return_val_if_fail (n <= G_MAXUINT16, 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
+ n * header->signal_blob_size;
return (GISignalInfo *) gi_info_new (GI_INFO_TYPE_SIGNAL, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* gi_object_info_find_signal:
* @info: a #GIObjectInfo
* @name: name of signal
*
* Obtain a signal of the object type given a @name.
*
* `NULL` will be returned if there’s no signal available with that name.
*
* Returns: (transfer full) (nullable): The [class@GIRepository.SignalInfo],
* or `NULL` if no signal could be found. Free the struct by calling
* [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GISignalInfo *
gi_object_info_find_signal (GIObjectInfo *info,
const char *name)
{
size_t n_signals;
n_signals = gi_object_info_get_n_signals (info);
for (size_t i = 0; i < n_signals; i++)
{
GISignalInfo *siginfo = gi_object_info_get_signal (info, i);
if (g_strcmp0 (gi_base_info_get_name ((GIBaseInfo *) siginfo), name) != 0)
{
gi_base_info_unref ((GIBaseInfo*)siginfo);
continue;
}
return siginfo;
}
return NULL;
}
/**
* gi_object_info_get_n_vfuncs:
* @info: a #GIObjectInfo
*
* Obtain the number of virtual functions that this object type has.
*
* Returns: number of virtual functions
* Since: 2.80
*/
unsigned int
gi_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;
}
/**
* gi_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 [class@GIRepository.VFuncInfo]. Free the struct
* by calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIVFuncInfo *
gi_object_info_get_vfunc (GIObjectInfo *info,
unsigned int n)
{
size_t 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);
g_return_val_if_fail (n <= G_MAXUINT16, 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 *) gi_info_new (GI_INFO_TYPE_VFUNC, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* gi_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 [method@GIRepository.VFuncInfo.get_invoker],
* otherwise that method will return `NULL`.
*
* See the documentation for [method@GIRepository.VFuncInfo.get_invoker] for
* more information on invoking virtuals.
*
* Returns: (transfer full) (nullable): The [class@GIRepository.VFuncInfo], or
* `NULL` if none is found. Free it with [method@GIRepository.BaseInfo.unref]
* when done.
* Since: 2.80
*/
GIVFuncInfo *
gi_object_info_find_vfunc (GIObjectInfo *info,
const char *name)
{
size_t 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 gi_base_info_find_vfunc (rinfo, offset, blob->n_vfuncs, name);
}
/**
* gi_object_info_find_vfunc_using_interfaces:
* @info: a #GIObjectInfo
* @name: name of vfunc to obtain
* @implementor: (out) (transfer full) (optional) (nullable): The implementor of
* the interface, or `NULL` to ignore. If no vfunc is found, this will return
* `NULL`.
*
* Locate a virtual function slot with name @name, searching both the object
* @info and any interfaces it implements.
*
* `NULL` will be returned if there’s no vfunc available with that 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 [method@GIRepository.VFuncInfo.get_invoker],
* otherwise that method will return `NULL`.
*
* Note that this function does *not* search parent classes; you will have
* to chain up if that’s desired.
*
* Returns: (transfer full) (nullable): The [class@GIRepository.VFuncInfo],
* or `NULL` if none was found. Free the struct by calling
* [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIVFuncInfo *
gi_object_info_find_vfunc_using_interfaces (GIObjectInfo *info,
const char *name,
GIObjectInfo **implementor)
{
GIVFuncInfo *result = NULL;
GIObjectInfo *implementor_result = NULL;
result = gi_object_info_find_vfunc (info, name);
if (result)
implementor_result = (GIObjectInfo *) gi_base_info_ref ((GIBaseInfo*) info);
if (result == NULL)
{
int n_interfaces;
int i;
n_interfaces = gi_object_info_get_n_interfaces (info);
for (i = 0; i < n_interfaces; ++i)
{
GIInterfaceInfo *iface_info;
iface_info = gi_object_info_get_interface (info, i);
result = gi_interface_info_find_vfunc (iface_info, name);
if (result != NULL)
{
implementor_result = (GIObjectInfo *) iface_info;
break;
}
gi_base_info_unref ((GIBaseInfo*) iface_info);
}
}
if (implementor)
*implementor = implementor_result;
else if (implementor_result != NULL)
gi_base_info_unref ((GIBaseInfo*) implementor_result);
return result;
}
/**
* gi_object_info_get_n_constants:
* @info: a #GIObjectInfo
*
* Obtain the number of constants that this object type has.
*
* Returns: number of constants
* Since: 2.80
*/
unsigned int
gi_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;
}
/**
* gi_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 [class@GIRepository.ConstantInfo]. Free the
* struct by calling [method@GIRepository.BaseInfo.unref] when done.
* Since: 2.80
*/
GIConstantInfo *
gi_object_info_get_constant (GIObjectInfo *info,
unsigned int n)
{
size_t 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);
g_return_val_if_fail (n <= G_MAXUINT16, 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
+ blob->n_vfuncs * header->vfunc_blob_size
+ n * header->constant_blob_size;
return (GIConstantInfo *) gi_info_new (GI_INFO_TYPE_CONSTANT, (GIBaseInfo*)info,
rinfo->typelib, offset);
}
/**
* gi_object_info_get_class_struct:
* @info: a #GIObjectInfo
*
* Every [class@GObject.Object] has two structures; an instance structure and a
* class structure. This function returns the metadata for the class structure.
*
* Returns: (transfer full) (nullable): The [class@GIRepository.StructInfo] or
* `NULL` if it’s unknown. Free with [method@GIRepository.BaseInfo.unref] when
* done.
* Since: 2.80
*/
GIStructInfo *
gi_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 *) gi_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;
void *func = NULL;
parent_info = (GIObjectInfo *) gi_base_info_ref ((GIBaseInfo *) info);
while (parent_info != NULL)
{
parents = g_slist_prepend (parents, parent_info);
parent_info = gi_object_info_get_parent (parent_info);
}
for (l = parents; l; l = l->next)
{
parent_info = l->data;
symbol = getter (parent_info);
if (symbol == NULL)
continue;
gi_typelib_symbol (((GIRealInfo *)parent_info)->typelib, symbol, (gpointer*) &func);
if (func)
break;
}
g_slist_free_full (parents, (GDestroyNotify) gi_base_info_unref);
return func;
}
/**
* gi_object_info_get_ref_function_name:
* @info: a #GIObjectInfo
*
* Obtain the symbol name of the function that should be called to ref this
* object type.
*
* It’s mainly used for fundamental types. The type signature for
* the symbol is [type@GIRepository.ObjectInfoRefFunction]. To fetch the
* function pointer see
* [method@GIRepository.ObjectInfo.get_ref_function_pointer].
*
* Returns: (nullable): the symbol, or `NULL` if the object type has no ref
* function
* Since: 2.80
*/
const char *
gi_object_info_get_ref_function_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];
if (blob->ref_func)
return gi_typelib_get_string (rinfo->typelib, blob->ref_func);
return NULL;
}
/**
* gi_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: (nullable): the function pointer, or `NULL` if the object type has
* no ref function
* Since: 2.80
*/
GIObjectInfoRefFunction
gi_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)gi_object_info_get_ref_function_name);
}
/**
* gi_object_info_get_unref_function_name:
* @info: a #GIObjectInfo
*
* Obtain the symbol name of the function that should be called to unref this
* object type.
*
* It’s mainly used for fundamental types. The type signature for the symbol is
* [type@GIRepository.ObjectInfoUnrefFunction]. To fetch the function pointer
* see [method@GIRepository.ObjectInfo.get_unref_function_pointer].
*
* Returns: (nullable): the symbol, or `NULL` if the object type has no unref
* function
* Since: 2.80
*/
const char *
gi_object_info_get_unref_function_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];
if (blob->unref_func)
return gi_typelib_get_string (rinfo->typelib, blob->unref_func);
return NULL;
}
/**
* gi_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: (nullable): the function pointer, or `NULL` if the object type has
* no unref function
* Since: 2.80
*/
GIObjectInfoUnrefFunction
gi_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)gi_object_info_get_unref_function_name);
}
/**
* gi_object_info_get_set_value_function_name:
* @info: a #GIObjectInfo
*
* Obtain the symbol name of the function that should be called to set a
* [type@GObject.Value], given an object instance pointer of this object type.
*
* It’s mainly used for fundamental types. The type signature for the symbol
* is [type@GIRepository.ObjectInfoSetValueFunction]. To fetch the function
* pointer see [method@GIRepository.ObjectInfo.get_set_value_function_pointer].
*
* Returns: (nullable): the symbol, or `NULL` if the object type has no
* set-value function
* Since: 2.80
*/
const char *
gi_object_info_get_set_value_function_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];
if (blob->set_value_func)
return gi_typelib_get_string (rinfo->typelib, blob->set_value_func);
return NULL;
}
/**
* gi_object_info_get_set_value_function_pointer: (skip)
* @info: a #GIObjectInfo
*
* Obtain a pointer to a function which can be used to set a
* [type@GObject.Value], 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: (nullable): the function pointer, or `NULL` if the object type has
* no set-value function
* Since: 2.80
*/
GIObjectInfoSetValueFunction
gi_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)gi_object_info_get_set_value_function_name);
}
/**
* gi_object_info_get_get_value_function_name:
* @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 [type@GObject.Value].
*
* It’s mainly used for fundamental types. The type signature for the symbol
* is [type@GIRepository.ObjectInfoGetValueFunction]. To fetch the function
* pointer see [method@GIRepository.ObjectInfo.get_get_value_function_pointer].
*
* Returns: (nullable): the symbol, or `NULL` if the object type has no
* get-value function
* Since: 2.80
*/
const char *
gi_object_info_get_get_value_function_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];
if (blob->get_value_func)
return gi_typelib_get_string (rinfo->typelib, blob->get_value_func);
return NULL;
}
/**
* gi_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 [type@GObject.Value].
*
* This takes derivation into account and will reversely traverse
* the base classes of this type, starting at the top type.
*
* Returns: (nullable): the function pointer, or `NULL` if the object type has
* no get-value function
* Since: 2.80
*/
GIObjectInfoGetValueFunction
gi_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)gi_object_info_get_get_value_function_name);
}
void
gi_object_info_class_init (gpointer g_class,
gpointer class_data)
{
GIBaseInfoClass *info_class = g_class;
info_class->info_type = GI_INFO_TYPE_OBJECT;
}