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| 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___FORMAT_FORMATTER_POINTER_H |
| 11 | #define _LIBCPP___FORMAT_FORMATTER_POINTER_H |
| 12 | |
| 13 | #include <__config> |
| 14 | #include <__cstddef/nullptr_t.h> |
| 15 | #include <__format/concepts.h> |
| 16 | #include <__format/format_parse_context.h> |
| 17 | #include <__format/formatter.h> |
| 18 | #include <__format/formatter_integral.h> |
| 19 | #include <__format/formatter_output.h> |
| 20 | #include <__format/parser_std_format_spec.h> |
| 21 | #include <cstdint> |
| 22 | |
| 23 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 24 | # pragma GCC system_header |
| 25 | #endif |
| 26 | |
| 27 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 28 | |
| 29 | #if _LIBCPP_STD_VER >= 20 |
| 30 | |
| 31 | template <__fmt_char_type _CharT> |
| 32 | struct __formatter_pointer { |
| 33 | public: |
| 34 | template <class _ParseContext> |
| 35 | _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { |
| 36 | typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_pointer); |
| 37 | __format_spec::__process_display_type_pointer(__parser_.__type_, "a pointer"); |
| 38 | return __result; |
| 39 | } |
| 40 | |
| 41 | template <class _FormatContext> |
| 42 | _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(const void* __ptr, _FormatContext& __ctx) const { |
| 43 | __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx); |
| 44 | __specs.__std_.__alternate_form_ = true; |
| 45 | __specs.__std_.__type_ = |
| 46 | __specs.__std_.__type_ == __format_spec::__type::__pointer_upper_case |
| 47 | ? __format_spec::__type::__hexadecimal_upper_case |
| 48 | : __format_spec::__type::__hexadecimal_lower_case; |
| 49 | |
| 50 | return __formatter::__format_integer(reinterpret_cast<uintptr_t>(__ptr), __ctx, __specs); |
| 51 | } |
| 52 | |
| 53 | __format_spec::__parser<_CharT> __parser_; |
| 54 | }; |
| 55 | |
| 56 | // [format.formatter.spec]/2.4 |
| 57 | // For each charT, the pointer type specializations template<> |
| 58 | // - struct formatter<nullptr_t, charT>; |
| 59 | // - template<> struct formatter<void*, charT>; |
| 60 | // - template<> struct formatter<const void*, charT>; |
| 61 | template <__fmt_char_type _CharT> |
| 62 | struct formatter<nullptr_t, _CharT> : public __formatter_pointer<_CharT> {}; |
| 63 | template <__fmt_char_type _CharT> |
| 64 | struct formatter<void*, _CharT> : public __formatter_pointer<_CharT> {}; |
| 65 | template <__fmt_char_type _CharT> |
| 66 | struct formatter<const void*, _CharT> : public __formatter_pointer<_CharT> {}; |
| 67 | |
| 68 | # if _LIBCPP_STD_VER >= 23 |
| 69 | template <> |
| 70 | inline constexpr bool enable_nonlocking_formatter_optimization<nullptr_t> = true; |
| 71 | template <> |
| 72 | inline constexpr bool enable_nonlocking_formatter_optimization<void*> = true; |
| 73 | template <> |
| 74 | inline constexpr bool enable_nonlocking_formatter_optimization<const void*> = true; |
| 75 | # endif // _LIBCPP_STD_VER >= 23 |
| 76 | #endif // _LIBCPP_STD_VER >= 20 |
| 77 | |
| 78 | _LIBCPP_END_NAMESPACE_STD |
| 79 | |
| 80 | #endif // _LIBCPP___FORMAT_FORMATTER_POINTER_H |
| 81 |
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