v1/__cxx03/wctype.h

0001 // -*- C++ -*-
0002 //===----------------------------------------------------------------------===//
0003 //
0004 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0005 // See https://llvm.org/LICENSE.txt for license information.
0006 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0007 //
0008 //===----------------------------------------------------------------------===//
0009
0010 #ifndef _LIBCPP___CXX03_WCTYPE_H
0011 #define _LIBCPP___CXX03_WCTYPE_H
0012
0013 /*
0014     wctype.h synopsis
0015
0016 Macros:
0017
0018     WEOF
0019
0020 Types:
0021
0022     wint_t
0023     wctrans_t
0024     wctype_t
0025
0026 int iswalnum(wint_t wc);
0027 int iswalpha(wint_t wc);
0028 int iswblank(wint_t wc);  // C99
0029 int iswcntrl(wint_t wc);
0030 int iswdigit(wint_t wc);
0031 int iswgraph(wint_t wc);
0032 int iswlower(wint_t wc);
0033 int iswprint(wint_t wc);
0034 int iswpunct(wint_t wc);
0035 int iswspace(wint_t wc);
0036 int iswupper(wint_t wc);
0037 int iswxdigit(wint_t wc);
0038 int iswctype(wint_t wc, wctype_t desc);
0039 wctype_t wctype(const char* property);
0040 wint_t towlower(wint_t wc);
0041 wint_t towupper(wint_t wc);
0042 wint_t towctrans(wint_t wc, wctrans_t desc);
0043 wctrans_t wctrans(const char* property);
0044
0045 */
0046
0047 #include <__cxx03/__config>
0048
0049 #if defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
0050 #  error                                                                                                               \
0051       "The <wctype.h> header is not supported since libc++ has been configured with LIBCXX_ENABLE_WIDE_CHARACTERS disabled"
0052 #endif
0053
0054 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0055 #  pragma GCC system_header
0056 #endif
0057
0058 // TODO:
0059 // In the future, we should unconditionally include_next <wctype.h> here and instead
0060 // have a mode under which the library does not need libc++'s <wctype.h> or <cwctype>
0061 // at all (i.e. a mode without wchar_t). As it stands, we need to do that to completely
0062 // bypass the using declarations in <cwctype> when we did not include <__cxx03/wctype.h>.
0063 // Otherwise, a using declaration like `using ::wint_t` in <cwctype> will refer to
0064 // nothing (with using_if_exists), and if we include another header that defines one
0065 // of these declarations (e.g. <wchar.h>), the second `using ::wint_t` with using_if_exists
0066 // will fail because it does not refer to the same declaration.
0067 #if __has_include_next(<wctype.h>)
0068 #  include_next <wctype.h>
0069 #  define _LIBCPP_INCLUDED_C_LIBRARY_WCTYPE_H
0070 #endif
0071
0072 #ifdef __cplusplus
0073
0074 #  undef iswalnum
0075 #  undef iswalpha
0076 #  undef iswblank
0077 #  undef iswcntrl
0078 #  undef iswdigit
0079 #  undef iswgraph
0080 #  undef iswlower
0081 #  undef iswprint
0082 #  undef iswpunct
0083 #  undef iswspace
0084 #  undef iswupper
0085 #  undef iswxdigit
0086 #  undef iswctype
0087 #  undef wctype
0088 #  undef towlower
0089 #  undef towupper
0090 #  undef towctrans
0091 #  undef wctrans
0092
0093 #endif // __cplusplus
0094
0095 #endif // _LIBCPP___CXX03_WCTYPE_H