1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP___MBSTATE_T_H
11#define _LIBCPP___MBSTATE_T_H
12
13#include <__config>
14
15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16#  pragma GCC system_header
17#endif
18
19// TODO(ldionne):
20// The goal of this header is to provide mbstate_t without having to pull in
21// <wchar.h> or <uchar.h>. This is necessary because we need that type even
22// when we don't have (or try to provide) support for wchar_t, because several
23// types like std::fpos are defined in terms of mbstate_t.
24//
25// This is a gruesome hack, but I don't know how to make it cleaner for
26// the time being.
27
28#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
29#   include <wchar.h> // for mbstate_t
30#elif __has_include(<bits/types/mbstate_t.h>)
31#   include <bits/types/mbstate_t.h> // works on most Unixes
32#elif __has_include(<sys/_types/_mbstate_t.h>)
33#   include <sys/_types/_mbstate_t.h> // works on Darwin
34#else
35#   error "The library was configured without support for wide-characters, but we don't know how to get the definition of mbstate_t without <wchar.h> on your platform."
36#endif
37
38_LIBCPP_BEGIN_NAMESPACE_STD
39
40using ::mbstate_t _LIBCPP_USING_IF_EXISTS;
41
42_LIBCPP_END_NAMESPACE_STD
43
44#endif // _LIBCPP___MBSTATE_T_H
45