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 <__format/concepts.h> 15 #include <__format/format_parse_context.h> 16 #include <__format/formatter.h> 17 #include <__format/formatter_integral.h> 18 #include <__format/formatter_output.h> 19 #include <__format/parser_std_format_spec.h> 20 #include <cstddef> 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 _LIBCPP_TEMPLATE_VIS __formatter_pointer { 33 public: 34 template <class _ParseContext> parse__formatter_pointer35 _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> format__formatter_pointer42 _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 _LIBCPP_TEMPLATE_VIS formatter<nullptr_t, _CharT> : public __formatter_pointer<_CharT> {}; 63 template <__fmt_char_type _CharT> 64 struct _LIBCPP_TEMPLATE_VIS formatter<void*, _CharT> : public __formatter_pointer<_CharT> {}; 65 template <__fmt_char_type _CharT> 66 struct _LIBCPP_TEMPLATE_VIS formatter<const void*, _CharT> : public __formatter_pointer<_CharT> {}; 67 68 #endif //_LIBCPP_STD_VER >= 20 69 70 _LIBCPP_END_NAMESPACE_STD 71 72 #endif // _LIBCPP___FORMAT_FORMATTER_POINTER_H 73