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ba87515fea
Currently, the library-internal feature test macros are only defined if the feature is not available, and always have the prefix `_LIBCPP_HAS_NO_`. This patch changes that, so that they are always defined and have the prefix `_LIBCPP_HAS_` instead. This changes the canonical use of these macros to `#if _LIBCPP_HAS_FEATURE`, which means that using an undefined macro (e.g. due to a missing include) is diagnosed now. While this is rather unlikely currently, a similar change in `<__configuration/availability.h>` caught a few bugs. This also improves readability, since it removes the double-negation of `#ifndef _LIBCPP_HAS_NO_FEATURE`. The current patch only touches the macros defined in `<__config>`. If people are happy with this approach, I'll make a follow-up PR to also change the macros defined in `<__config_site>`.
127 lines
5.2 KiB
C++
127 lines
5.2 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___FORMAT_FORMATTER_INTEGER_H
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#define _LIBCPP___FORMAT_FORMATTER_INTEGER_H
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#include <__concepts/arithmetic.h>
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#include <__config>
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#include <__format/concepts.h>
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#include <__format/format_parse_context.h>
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#include <__format/formatter.h>
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#include <__format/formatter_integral.h>
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#include <__format/formatter_output.h>
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#include <__format/parser_std_format_spec.h>
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#include <__type_traits/is_void.h>
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#include <__type_traits/make_32_64_or_128_bit.h>
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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 _LIBCPP_STD_VER >= 20
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS __formatter_integer {
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public:
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template <class _ParseContext>
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_LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) {
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typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_integral);
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__format_spec::__process_parsed_integer(__parser_, "an integer");
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return __result;
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}
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template <integral _Tp, class _FormatContext>
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_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(_Tp __value, _FormatContext& __ctx) const {
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__format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx);
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if (__specs.__std_.__type_ == __format_spec::__type::__char)
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return __formatter::__format_char(__value, __ctx.out(), __specs);
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using _Type = __make_32_64_or_128_bit_t<_Tp>;
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static_assert(!is_void<_Type>::value, "unsupported integral type used in __formatter_integer::__format");
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// Reduce the number of instantiation of the integer formatter
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return __formatter::__format_integer(static_cast<_Type>(__value), __ctx, __specs);
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}
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__format_spec::__parser<_CharT> __parser_;
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};
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// Signed integral types.
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<signed char, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<short, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<int, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<long, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<long long, _CharT> : public __formatter_integer<_CharT> {};
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# if _LIBCPP_HAS_INT128
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<__int128_t, _CharT> : public __formatter_integer<_CharT> {};
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# endif
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// Unsigned integral types.
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<unsigned char, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<unsigned short, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<unsigned, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<unsigned long, _CharT> : public __formatter_integer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<unsigned long long, _CharT> : public __formatter_integer<_CharT> {};
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# if _LIBCPP_HAS_INT128
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template <__fmt_char_type _CharT>
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struct _LIBCPP_TEMPLATE_VIS formatter<__uint128_t, _CharT> : public __formatter_integer<_CharT> {};
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# endif
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# if _LIBCPP_STD_VER >= 23
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<signed char> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<short> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<int> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<long> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<long long> = true;
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# if _LIBCPP_HAS_INT128
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<__int128_t> = true;
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# endif
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<unsigned char> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<unsigned short> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<unsigned> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<unsigned long> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<unsigned long long> = true;
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# if _LIBCPP_HAS_INT128
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<__uint128_t> = true;
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# endif
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# endif // _LIBCPP_STD_VER >= 23
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___FORMAT_FORMATTER_INTEGER_H
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