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2a99d4b168
There are a handful of APIs in libgirepository which are used on performance-sensitive code paths in language bindings (such as looking at arguments when doing function calls). Historically libgirepository has provided a stack-allocated variant for them, which avoids returning a newly allocated `GIBaseInfo`. Since moving to glib.git and porting to `GTypeInstance`, that stack allocated version has been broken. This commit fixes it, by exposing obfuscated stack allocatable versions of `GITypeInfo` and `GIArgInfo`, which are the two `GIBaseInfo` subtypes which can be returned by the stack allocation functions. The commit includes unit tests for them. Signed-off-by: Philip Withnall <pwithnall@gnome.org> Fixes: #3217
265 lines
7.2 KiB
C
265 lines
7.2 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
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* GObject introspection: Private headers
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*
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* Copyright (C) 2010 Johan Dahlin
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#include <ffi.h>
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#include <glib.h>
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#define __GIREPOSITORY_H_INSIDE__
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#include <girepository/gibaseinfo.h>
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#include <girepository/girepository.h>
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#include <girepository/gitypelib.h>
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/* FIXME: For now, GIRealInfo is a compatibility define. This will eventually
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* be removed. */
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typedef struct _GIBaseInfo GIRealInfo;
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/*
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* We just use one structure for all of the info object
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* types; in general, we should be reading data directly
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* from the typelib, and not having computed data in
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* per-type structures.
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*/
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struct _GIBaseInfo
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{
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/*< private >*/
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GTypeInstance parent_instance;
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gatomicrefcount ref_count;
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/* @repository is never reffed, as that would lead to a refcount cycle with the repository */
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GIRepository *repository;
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/* @container is reffed if the GIBaseInfo is heap-allocated, but not reffed if it’s stack-allocated */
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GIBaseInfo *container;
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GITypelib *typelib;
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uint32_t offset;
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uint32_t type_is_embedded : 1; /* Used by GITypeInfo */
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/* A copy of GIBaseInfo is exposed publicly for stack-allocated derivatives
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* such as GITypeInfo, so its size is now ABI. */
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void *padding[6];
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};
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G_STATIC_ASSERT (sizeof (GIBaseInfo) == sizeof (GIBaseInfoStack));
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G_STATIC_ASSERT (G_ALIGNOF (GIBaseInfo) == G_ALIGNOF (GIBaseInfoStack));
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/* Subtypes */
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struct _GICallableInfo
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{
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GIBaseInfo parent;
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};
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void gi_callable_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIFunctionInfo
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{
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GICallableInfo parent;
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};
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void gi_function_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GICallbackInfo
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{
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GICallableInfo parent;
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};
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void gi_callback_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIRegisteredTypeInfo
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{
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GIBaseInfo parent;
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};
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void gi_registered_type_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIStructInfo
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{
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GIRegisteredTypeInfo parent;
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};
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void gi_struct_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIUnionInfo
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{
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GIRegisteredTypeInfo parent;
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};
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void gi_union_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIEnumInfo
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{
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GIRegisteredTypeInfo parent;
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};
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void gi_enum_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIFlagsInfo
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{
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GIEnumInfo parent;
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};
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void gi_flags_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIObjectInfo
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{
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GIRegisteredTypeInfo parent;
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};
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void gi_object_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIInterfaceInfo
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{
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GIRegisteredTypeInfo parent;
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};
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void gi_interface_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIBoxedInfo
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{
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GIRegisteredTypeInfo parent;
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};
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void gi_boxed_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIConstantInfo
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{
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GIBaseInfo parent;
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};
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void gi_constant_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIValueInfo
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{
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GIBaseInfo parent;
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};
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void gi_value_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GISignalInfo
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{
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GICallableInfo parent;
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};
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void gi_signal_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIVFuncInfo
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{
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GICallableInfo parent;
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};
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void gi_vfunc_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIPropertyInfo
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{
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GIBaseInfo parent;
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};
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void gi_property_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIFieldInfo
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{
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GIBaseInfo parent;
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};
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void gi_field_info_class_init (gpointer g_class,
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gpointer class_data);
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/* GIArgInfo is stack-allocatable so it can be used with
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* gi_callable_info_load_return_type() and gi_callable_info_load_arg(), so its
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* definition is actually public in gitypes.h. */
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void gi_arg_info_class_init (gpointer g_class,
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gpointer class_data);
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/* GITypeInfo is stack-allocatable so it can be used with
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* gi_arg_info_load_type(), so its definition is actually public in gitypes.h. */
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void gi_type_info_class_init (gpointer g_class,
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gpointer class_data);
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struct _GIUnresolvedInfo
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{
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GIBaseInfo parent;
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const char *name;
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const char *namespace;
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};
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void gi_unresolved_info_class_init (gpointer g_class,
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gpointer class_data);
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void gi_info_init (GIRealInfo *info,
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GType type,
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GIRepository *repository,
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GIBaseInfo *container,
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GITypelib *typelib,
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uint32_t offset);
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GIBaseInfo * gi_info_from_entry (GIRepository *repository,
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GITypelib *typelib,
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uint16_t index);
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GIBaseInfo * gi_info_new_full (GIInfoType type,
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GIRepository *repository,
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GIBaseInfo *container,
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GITypelib *typelib,
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uint32_t offset);
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GITypeInfo * gi_type_info_new (GIBaseInfo *container,
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GITypelib *typelib,
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uint32_t offset);
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void gi_type_info_init (GITypeInfo *info,
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GIBaseInfo *container,
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GITypelib *typelib,
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uint32_t offset);
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GIFunctionInfo * gi_base_info_find_method (GIBaseInfo *base,
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uint32_t offset,
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uint16_t n_methods,
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const char *name);
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GIVFuncInfo * gi_base_info_find_vfunc (GIRealInfo *rinfo,
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uint32_t offset,
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uint16_t n_vfuncs,
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const char *name);
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