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 <__availability> 14 #include <__config> 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 <cstddef> 22 #include <cstdint> 23 24 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 25 # pragma GCC system_header 26 #endif 27 28 _LIBCPP_BEGIN_NAMESPACE_STD 29 30 #if _LIBCPP_STD_VER >= 20 31 32 template <__fmt_char_type _CharT> 33 struct _LIBCPP_TEMPLATE_VIS __formatter_pointer { 34 public: 35 _LIBCPP_HIDE_FROM_ABI constexpr auto 36 parse(basic_format_parse_context<_CharT>& __parse_ctx) -> decltype(__parse_ctx.begin()) { 37 auto __result = __parser_.__parse(__parse_ctx, __format_spec::__fields_pointer); 38 __format_spec::__process_display_type_pointer(__parser_.__type_); 39 return __result; 40 } 41 42 _LIBCPP_HIDE_FROM_ABI auto format(const void* __ptr, auto& __ctx) const -> decltype(__ctx.out()) { 43 __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx); 44 __specs.__std_.__alternate_form_ = true; 45 __specs.__std_.__type_ = __format_spec::__type::__hexadecimal_lower_case; 46 return __formatter::__format_integer(reinterpret_cast<uintptr_t>(__ptr), __ctx, __specs); 47 } 48 49 __format_spec::__parser<_CharT> __parser_{.__alignment_ = __format_spec::__alignment::__right}; 50 }; 51 52 // [format.formatter.spec]/2.4 53 // For each charT, the pointer type specializations template<> 54 // - struct formatter<nullptr_t, charT>; 55 // - template<> struct formatter<void*, charT>; 56 // - template<> struct formatter<const void*, charT>; 57 template <__fmt_char_type _CharT> 58 struct _LIBCPP_TEMPLATE_VIS formatter<nullptr_t, _CharT> 59 : public __formatter_pointer<_CharT> {}; 60 template <__fmt_char_type _CharT> 61 struct _LIBCPP_TEMPLATE_VIS formatter<void*, _CharT> : public __formatter_pointer<_CharT> { 62 }; 63 template <__fmt_char_type _CharT> 64 struct _LIBCPP_TEMPLATE_VIS formatter<const void*, _CharT> 65 : public __formatter_pointer<_CharT> {}; 66 67 #endif //_LIBCPP_STD_VER >= 20 68 69 _LIBCPP_END_NAMESPACE_STD 70 71 #endif // _LIBCPP___FORMAT_FORMATTER_POINTER_H 72