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_UCHAR_H
11#define _LIBCPP_UCHAR_H
12
13/*
14    uchar.h synopsis // since C++11
15
16Macros:
17
18    __STDC_UTF_16__
19    __STDC_UTF_32__
20
21Types:
22
23  mbstate_t
24  size_t
25
26size_t mbrtoc8(char8_t* pc8, const char* s, size_t n, mbstate_t* ps);     // since C++20
27size_t c8rtomb(char* s, char8_t c8, mbstate_t* ps);                       // since C++20
28size_t mbrtoc16(char16_t* pc16, const char* s, size_t n, mbstate_t* ps);
29size_t c16rtomb(char* s, char16_t c16, mbstate_t* ps);
30size_t mbrtoc32(char32_t* pc32, const char* s, size_t n, mbstate_t* ps);
31size_t c32rtomb(char* s, char32_t c32, mbstate_t* ps);
32
33*/
34
35#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
36#  include <__cxx03/uchar.h>
37#else
38#  include <__config>
39
40#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
41#    pragma GCC system_header
42#  endif
43
44#  if !defined(_LIBCPP_CXX03_LANG)
45
46// Some platforms don't implement <uchar.h> and we don't want to give a hard
47// error on those platforms. When the platform doesn't provide <uchar.h>, at
48// least include <stddef.h> so we get the declaration for size_t, and try to
49// get the declaration of mbstate_t too.
50#    if __has_include_next(<uchar.h>)
51#      include_next <uchar.h>
52#    else
53#      include <__mbstate_t.h>
54#      include <stddef.h>
55#    endif
56
57#  endif // _LIBCPP_CXX03_LANG
58#endif   // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
59
60#endif // _LIBCPP_UCHAR_H