libstdc++
formatfwd.h
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1// <format> Formatting -*- C++ -*-
2
3// Copyright The GNU Toolchain Authors.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file bits/formatfwd.h
26 * This is an internal header file, included by other library headers.
27 * Do not attempt to use it directly. @headername{format}
28 */
29
30#ifndef _GLIBCXX_FORMAT_FWD_H
31#define _GLIBCXX_FORMAT_FWD_H 1
32
33#ifdef _GLIBCXX_SYSHDR
34#pragma GCC system_header
35#endif
36
37// <bits/version.h> must have been included before this header:
38#ifdef __glibcxx_format // C++ >= 20 && HOSTED
39
40namespace std _GLIBCXX_VISIBILITY(default)
41{
42_GLIBCXX_BEGIN_NAMESPACE_VERSION
43
44 // [format.context], class template basic_format_context
45 template<typename _Out, typename _CharT> class basic_format_context;
46
47 // [format.parse.ctx], class template basic_format_parse_context
48 template<typename _CharT> class basic_format_parse_context;
49
50 // [format.formatter], formatter
51 template<typename _Tp, typename _CharT = char> struct formatter;
52
53namespace __format
54{
55#ifdef _GLIBCXX_USE_WCHAR_T
56 template<typename _CharT>
57 concept __char = same_as<_CharT, char> || same_as<_CharT, wchar_t>;
58#else
59 template<typename _CharT>
60 concept __char = same_as<_CharT, char>;
61#endif
62
63 template<__char _CharT>
64 struct __formatter_int;
65}
66
67_GLIBCXX_END_NAMESPACE_VERSION
68} // namespace std
69#endif // __glibcxx_format
70#endif // _GLIBCXX_FORMAT_FWD_H
ISO C++ entities toplevel namespace is std.