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 template <class _ParseContext> 36 _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) { 37 typename _ParseContext::iterator __result = __parser_.__parse(__ctx, __format_spec::__fields_pointer); 38 __format_spec::__process_display_type_pointer(__parser_.__type_, "a pointer"); 39 return __result; 40 } 41 42 template <class _FormatContext> 43 _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(const void* __ptr, _FormatContext& __ctx) const { 44 __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx); 45 __specs.__std_.__alternate_form_ = true; 46 __specs.__std_.__type_ = 47 __specs.__std_.__type_ == __format_spec::__type::__pointer_upper_case 48 ? __format_spec::__type::__hexadecimal_upper_case 49 : __format_spec::__type::__hexadecimal_lower_case; 50 51 return __formatter::__format_integer(reinterpret_cast<uintptr_t>(__ptr), __ctx, __specs); 52 } 53 54 __format_spec::__parser<_CharT> __parser_; 55 }; 56 57 // [format.formatter.spec]/2.4 58 // For each charT, the pointer type specializations template<> 59 // - struct formatter<nullptr_t, charT>; 60 // - template<> struct formatter<void*, charT>; 61 // - template<> struct formatter<const void*, charT>; 62 template <__fmt_char_type _CharT> 63 struct _LIBCPP_TEMPLATE_VIS formatter<nullptr_t, _CharT> 64 : public __formatter_pointer<_CharT> {}; 65 template <__fmt_char_type _CharT> 66 struct _LIBCPP_TEMPLATE_VIS formatter<void*, _CharT> : public __formatter_pointer<_CharT> { 67 }; 68 template <__fmt_char_type _CharT> 69 struct _LIBCPP_TEMPLATE_VIS formatter<const void*, _CharT> 70 : public __formatter_pointer<_CharT> {}; 71 72 #endif //_LIBCPP_STD_VER >= 20 73 74 _LIBCPP_END_NAMESPACE_STD 75 76 #endif // _LIBCPP___FORMAT_FORMATTER_POINTER_H 77