e78f53d1e8
This reverts commit 68c04b0ae62d8431d72d8b47fc13008002ee4387. This disables the IWYU mapping that caused the failure, since the headers aren't reachable for now. This is the first part of the "Freezing C++03 headers" proposal explained in https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319/58. This patch mechanically copies the headers as of the LLVM 19.1 release into a subdirectory of libc++ so that we can start using these headers when building in C++03 mode. We are going to be backporting important changes to that copy of the headers until the LLVM 21 release. After the LLVM 21 release, only critical bugfixes will be fixed in the C++03 copy of the headers. This patch only performs a copy of the headers -- these headers are still unused by the rest of the codebase.
116 lines
3.8 KiB
C++
116 lines
3.8 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_CHARCONV
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#define _LIBCPP_CHARCONV
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/*
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charconv synopsis
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namespace std {
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// floating-point format for primitive numerical conversion
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enum class chars_format {
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scientific = unspecified,
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fixed = unspecified,
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hex = unspecified,
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general = fixed | scientific
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};
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// 23.20.2, primitive numerical output conversion
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struct to_chars_result {
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char* ptr;
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errc ec;
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friend bool operator==(const to_chars_result&, const to_chars_result&) = default; // since C++20
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constexpr explicit operator bool() const noexcept { return ec == errc{}; } // since C++26
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};
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constexpr to_chars_result to_chars(char* first, char* last, see below value,
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int base = 10); // constexpr since C++23
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to_chars_result to_chars(char* first, char* last, bool value,
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int base = 10) = delete;
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to_chars_result to_chars(char* first, char* last, float value);
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to_chars_result to_chars(char* first, char* last, double value);
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to_chars_result to_chars(char* first, char* last, long double value);
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to_chars_result to_chars(char* first, char* last, float value,
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chars_format fmt);
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to_chars_result to_chars(char* first, char* last, double value,
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chars_format fmt);
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to_chars_result to_chars(char* first, char* last, long double value,
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chars_format fmt);
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to_chars_result to_chars(char* first, char* last, float value,
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chars_format fmt, int precision);
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to_chars_result to_chars(char* first, char* last, double value,
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chars_format fmt, int precision);
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to_chars_result to_chars(char* first, char* last, long double value,
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chars_format fmt, int precision);
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// 23.20.3, primitive numerical input conversion
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struct from_chars_result {
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const char* ptr;
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errc ec;
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friend bool operator==(const from_chars_result&, const from_chars_result&) = default; // since C++20
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constexpr explicit operator bool() const noexcept { return ec == errc{}; } // since C++26
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};
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constexpr from_chars_result from_chars(const char* first, const char* last,
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see below& value, int base = 10); // constexpr since C++23
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} // namespace std
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*/
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#include <__config>
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#if _LIBCPP_STD_VER >= 17
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# include <__charconv/chars_format.h>
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# include <__charconv/from_chars_integral.h>
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# include <__charconv/from_chars_result.h>
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# include <__charconv/tables.h>
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# include <__charconv/to_chars.h>
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# include <__charconv/to_chars_base_10.h>
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# include <__charconv/to_chars_floating_point.h>
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# include <__charconv/to_chars_integral.h>
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# include <__charconv/to_chars_result.h>
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# include <__charconv/traits.h>
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#endif // _LIBCPP_STD_VER >= 17
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#include <version>
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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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_LIBCPP_END_NAMESPACE_STD
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#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 14
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# include <cerrno>
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# include <cstddef>
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# include <initializer_list>
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# include <new>
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#endif
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#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
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# include <cmath>
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# include <concepts>
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# include <cstdint>
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# include <cstdlib>
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# include <cstring>
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# include <iosfwd>
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# include <limits>
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# include <type_traits>
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#endif
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#endif // _LIBCPP_CHARCONV
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