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81 lines
3.0 KiB
C++
81 lines
3.0 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___FORMAT_FORMATTER_POINTER_H
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#define _LIBCPP___FORMAT_FORMATTER_POINTER_H
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#include <__config>
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#include <__cstddef/nullptr_t.h>
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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 <cstdint>
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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 __formatter_pointer {
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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_pointer);
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__format_spec::__process_display_type_pointer(__parser_.__type_, "a pointer");
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return __result;
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}
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template <class _FormatContext>
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_LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(const void* __ptr, _FormatContext& __ctx) const {
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__format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx);
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__specs.__std_.__alternate_form_ = true;
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__specs.__std_.__type_ =
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__specs.__std_.__type_ == __format_spec::__type::__pointer_upper_case
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? __format_spec::__type::__hexadecimal_upper_case
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: __format_spec::__type::__hexadecimal_lower_case;
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return __formatter::__format_integer(reinterpret_cast<uintptr_t>(__ptr), __ctx, __specs);
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}
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__format_spec::__parser<_CharT> __parser_;
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};
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// [format.formatter.spec]/2.4
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// For each charT, the pointer type specializations template<>
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// - struct formatter<nullptr_t, charT>;
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// - template<> struct formatter<void*, charT>;
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// - template<> struct formatter<const void*, charT>;
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template <__fmt_char_type _CharT>
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struct formatter<nullptr_t, _CharT> : public __formatter_pointer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct formatter<void*, _CharT> : public __formatter_pointer<_CharT> {};
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template <__fmt_char_type _CharT>
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struct formatter<const void*, _CharT> : public __formatter_pointer<_CharT> {};
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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<nullptr_t> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<void*> = true;
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template <>
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inline constexpr bool enable_nonlocking_formatter_optimization<const void*> = true;
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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_POINTER_H
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