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
32template <__fmt_char_type _CharT>
33struct _LIBCPP_TEMPLATE_VIS __formatter_pointer {
34public:
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>;
62template <__fmt_char_type _CharT>
63struct _LIBCPP_TEMPLATE_VIS formatter<nullptr_t, _CharT> : public __formatter_pointer<_CharT> {};
64template <__fmt_char_type _CharT>
65struct _LIBCPP_TEMPLATE_VIS formatter<void*, _CharT> : public __formatter_pointer<_CharT> {};
66template <__fmt_char_type _CharT>
67struct _LIBCPP_TEMPLATE_VIS formatter<const void*, _CharT> : public __formatter_pointer<_CharT> {};
68
69#endif //_LIBCPP_STD_VER >= 20
70
71_LIBCPP_END_NAMESPACE_STD
72
73#endif // _LIBCPP___FORMAT_FORMATTER_POINTER_H
74