d6832a611a
Many headers include `<cstddef>` just for size_t, and pulling in additional content (e.g. the traits used for std::byte) is unnecessary. To solve this problem, this patch splits up `<cstddef>` into subcomponents so that headers can include only the parts that they actually require. This has the added benefit of making the modules build a lot stricter with respect to IWYU, and also providing a canonical location where we define `std::size_t` and friends (which were previously defined in multiple headers like `<cstddef>` and `<ctime>`). After this patch, there's still many places in the codebase where we include `<cstddef>` when `<__cstddef/size_t.h>` would be sufficient. This patch focuses on removing `<cstddef>` includes from __type_traits to make these headers non-circular with `<cstddef>`. Additional refactorings can be tackled separately.
76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CUCHAR
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#define _LIBCPP_CUCHAR
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/*
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cuchar synopsis // since C++11
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Macros:
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__STDC_UTF_16__
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__STDC_UTF_32__
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namespace std {
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Types:
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mbstate_t
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size_t
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size_t mbrtoc8(char8_t* pc8, const char* s, size_t n, mbstate_t* ps); // since C++20
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size_t c8rtomb(char* s, char8_t c8, mbstate_t* ps); // since C++20
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size_t mbrtoc16(char16_t* pc16, const char* s, size_t n, mbstate_t* ps);
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size_t c16rtomb(char* s, char16_t c16, mbstate_t* ps);
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size_t mbrtoc32(char32_t* pc32, const char* s, size_t n, mbstate_t* ps);
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size_t c32rtomb(char* s, char32_t c32, mbstate_t* ps);
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} // std
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*/
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#include <__config>
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#include <__cstddef/size_t.h>
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#include <uchar.h>
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#ifndef _LIBCPP_UCHAR_H
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# error <cuchar> tried including <uchar.h> but didn't find libc++'s <uchar.h> header. \
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This usually means that your header search paths are not configured properly. \
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The header search paths should contain the C++ Standard Library headers before \
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any C Standard Library, and you are probably using compiler flags that make that \
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not be the case.
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#endif
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if !defined(_LIBCPP_CXX03_LANG)
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using ::mbstate_t _LIBCPP_USING_IF_EXISTS;
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# if !defined(_LIBCPP_HAS_NO_C8RTOMB_MBRTOC8)
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using ::mbrtoc8 _LIBCPP_USING_IF_EXISTS;
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using ::c8rtomb _LIBCPP_USING_IF_EXISTS;
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# endif
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using ::mbrtoc16 _LIBCPP_USING_IF_EXISTS;
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using ::c16rtomb _LIBCPP_USING_IF_EXISTS;
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using ::mbrtoc32 _LIBCPP_USING_IF_EXISTS;
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using ::c32rtomb _LIBCPP_USING_IF_EXISTS;
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#endif // _LIBCPP_CXX03_LANG
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_CUCHAR
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