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_WCTYPE_H 11 #define _LIBCPP_WCTYPE_H 12 13 /* 14 wctype.h synopsis 15 16 Macros: 17 18 WEOF 19 20 Types: 21 22 wint_t 23 wctrans_t 24 wctype_t 25 26 int iswalnum(wint_t wc); 27 int iswalpha(wint_t wc); 28 int iswblank(wint_t wc); // C99 29 int iswcntrl(wint_t wc); 30 int iswdigit(wint_t wc); 31 int iswgraph(wint_t wc); 32 int iswlower(wint_t wc); 33 int iswprint(wint_t wc); 34 int iswpunct(wint_t wc); 35 int iswspace(wint_t wc); 36 int iswupper(wint_t wc); 37 int iswxdigit(wint_t wc); 38 int iswctype(wint_t wc, wctype_t desc); 39 wctype_t wctype(const char* property); 40 wint_t towlower(wint_t wc); 41 wint_t towupper(wint_t wc); 42 wint_t towctrans(wint_t wc, wctrans_t desc); 43 wctrans_t wctrans(const char* property); 44 45 */ 46 47 #include <__config> 48 49 #if defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS) 50 # error \ 51 "The <wctype.h> header is not supported since libc++ has been configured with LIBCXX_ENABLE_WIDE_CHARACTERS disabled" 52 #endif 53 54 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 55 # pragma GCC system_header 56 #endif 57 58 // TODO: 59 // In the future, we should unconditionally include_next <wctype.h> here and instead 60 // have a mode under which the library does not need libc++'s <wctype.h> or <cwctype> 61 // at all (i.e. a mode without wchar_t). As it stands, we need to do that to completely 62 // bypass the using declarations in <cwctype> when we did not include <wctype.h>. 63 // Otherwise, a using declaration like `using ::wint_t` in <cwctype> will refer to 64 // nothing (with using_if_exists), and if we include another header that defines one 65 // of these declarations (e.g. <wchar.h>), the second `using ::wint_t` with using_if_exists 66 // will fail because it does not refer to the same declaration. 67 #if __has_include_next(<wctype.h>) 68 # include_next <wctype.h> 69 # define _LIBCPP_INCLUDED_C_LIBRARY_WCTYPE_H 70 #endif 71 72 #ifdef __cplusplus 73 74 # undef iswalnum 75 # undef iswalpha 76 # undef iswblank 77 # undef iswcntrl 78 # undef iswdigit 79 # undef iswgraph 80 # undef iswlower 81 # undef iswprint 82 # undef iswpunct 83 # undef iswspace 84 # undef iswupper 85 # undef iswxdigit 86 # undef iswctype 87 # undef wctype 88 # undef towlower 89 # undef towupper 90 # undef towctrans 91 # undef wctrans 92 93 #endif // __cplusplus 94 95 #endif // _LIBCPP_WCTYPE_H 96