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 "The <wctype.h> header is not supported since libc++ has been configured with LIBCXX_ENABLE_WIDE_CHARACTERS disabled" 51 #endif 52 53 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 54 # pragma GCC system_header 55 #endif 56 57 // TODO: 58 // In the future, we should unconditionally include_next <wctype.h> here and instead 59 // have a mode under which the library does not need libc++'s <wctype.h> or <cwctype> 60 // at all (i.e. a mode without wchar_t). As it stands, we need to do that to completely 61 // bypass the using declarations in <cwctype> when we did not include <wctype.h>. 62 // Otherwise, a using declaration like `using ::wint_t` in <cwctype> will refer to 63 // nothing (with using_if_exists), and if we include another header that defines one 64 // of these declarations (e.g. <wchar.h>), the second `using ::wint_t` with using_if_exists 65 // will fail because it does not refer to the same declaration. 66 #if __has_include_next(<wctype.h>) 67 # include_next <wctype.h> 68 # define _LIBCPP_INCLUDED_C_LIBRARY_WCTYPE_H 69 #endif 70 71 #ifdef __cplusplus 72 73 #undef iswalnum 74 #undef iswalpha 75 #undef iswblank 76 #undef iswcntrl 77 #undef iswdigit 78 #undef iswgraph 79 #undef iswlower 80 #undef iswprint 81 #undef iswpunct 82 #undef iswspace 83 #undef iswupper 84 #undef iswxdigit 85 #undef iswctype 86 #undef wctype 87 #undef towlower 88 #undef towupper 89 #undef towctrans 90 #undef wctrans 91 92 #endif // __cplusplus 93 94 #endif // _LIBCPP_WCTYPE_H 95