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_IOSFWD
11#define _LIBCPP_IOSFWD
12
13/*
14 iosfwd synopsis
15
16namespace std
17{
18
19template<class charT> struct char_traits;
20template<> struct char_traits<char>;
21template<> struct char_traits<char8_t>; // C++20
22template<> struct char_traits<char16_t>;
23template<> struct char_traits<char32_t>;
24template<> struct char_traits<wchar_t>;
25
26template<class T> class allocator;
27
28class ios_base;
29template <class charT, class traits = char_traits<charT> > class basic_ios;
30
31template <class charT, class traits = char_traits<charT> > class basic_streambuf;
32template <class charT, class traits = char_traits<charT> > class basic_istream;
33template <class charT, class traits = char_traits<charT> > class basic_ostream;
34template <class charT, class traits = char_traits<charT> > class basic_iostream;
35
36template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
37 class basic_stringbuf;
38template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
39 class basic_istringstream;
40template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
41 class basic_ostringstream;
42template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
43 class basic_stringstream;
44
45template <class charT, class traits = char_traits<charT> > class basic_filebuf;
46template <class charT, class traits = char_traits<charT> > class basic_ifstream;
47template <class charT, class traits = char_traits<charT> > class basic_ofstream;
48template <class charT, class traits = char_traits<charT> > class basic_fstream;
49
50template <class charT, class traits = char_traits<charT> > class istreambuf_iterator;
51template <class charT, class traits = char_traits<charT> > class ostreambuf_iterator;
52
53typedef basic_ios<char> ios;
54typedef basic_ios<wchar_t> wios;
55
56typedef basic_streambuf<char> streambuf;
57typedef basic_istream<char> istream;
58typedef basic_ostream<char> ostream;
59typedef basic_iostream<char> iostream;
60
61typedef basic_stringbuf<char> stringbuf;
62typedef basic_istringstream<char> istringstream;
63typedef basic_ostringstream<char> ostringstream;
64typedef basic_stringstream<char> stringstream;
65
66typedef basic_filebuf<char> filebuf;
67typedef basic_ifstream<char> ifstream;
68typedef basic_ofstream<char> ofstream;
69typedef basic_fstream<char> fstream;
70
71typedef basic_streambuf<wchar_t> wstreambuf;
72typedef basic_istream<wchar_t> wistream;
73typedef basic_ostream<wchar_t> wostream;
74typedef basic_iostream<wchar_t> wiostream;
75
76typedef basic_stringbuf<wchar_t> wstringbuf;
77typedef basic_istringstream<wchar_t> wistringstream;
78typedef basic_ostringstream<wchar_t> wostringstream;
79typedef basic_stringstream<wchar_t> wstringstream;
80
81typedef basic_filebuf<wchar_t> wfilebuf;
82typedef basic_ifstream<wchar_t> wifstream;
83typedef basic_ofstream<wchar_t> wofstream;
84typedef basic_fstream<wchar_t> wfstream;
85
86template <class state> class fpos;
87using streampos = fpos<char_traits<char>::state_type>;
88using wstreampos = fpos<char_traits<wchar_t>::state_type>;
89using u8streampos = fpos<char_traits<char8_t>::state_type>; // C++20
90using u16streampos = fpos<char_traits<char16_t>::state_type>;
91using u32streampos = fpos<char_traits<char32_t>::state_type>;
92
93} // std
94
95*/
96
97#include <__assert> // all public C++ headers provide the assertion handler
98#include <__config>
99#include <__mbstate_t.h>
100#include <version>
101
102#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
103# pragma GCC system_header
104#endif
105
106_LIBCPP_BEGIN_NAMESPACE_STD
107
108class _LIBCPP_TYPE_VIS ios_base;
109
110template<class _CharT> struct _LIBCPP_TEMPLATE_VIS char_traits;
111template<> struct char_traits<char>;
112#ifndef _LIBCPP_HAS_NO_CHAR8_T
113template<> struct char_traits<char8_t>;
114#endif
115template<> struct char_traits<char16_t>;
116template<> struct char_traits<char32_t>;
117#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
118template<> struct char_traits<wchar_t>;
119#endif
120
121template<class _Tp> class _LIBCPP_TEMPLATE_VIS allocator;
122
123template <class _CharT, class _Traits = char_traits<_CharT> >
124 class _LIBCPP_TEMPLATE_VIS basic_ios;
125
126template <class _CharT, class _Traits = char_traits<_CharT> >
127 class _LIBCPP_TEMPLATE_VIS basic_streambuf;
128template <class _CharT, class _Traits = char_traits<_CharT> >
129 class _LIBCPP_TEMPLATE_VIS basic_istream;
130template <class _CharT, class _Traits = char_traits<_CharT> >
131 class _LIBCPP_TEMPLATE_VIS basic_ostream;
132template <class _CharT, class _Traits = char_traits<_CharT> >
133 class _LIBCPP_TEMPLATE_VIS basic_iostream;
134
135template <class _CharT, class _Traits = char_traits<_CharT>,
136 class _Allocator = allocator<_CharT> >
137 class _LIBCPP_TEMPLATE_VIS basic_stringbuf;
138template <class _CharT, class _Traits = char_traits<_CharT>,
139 class _Allocator = allocator<_CharT> >
140 class _LIBCPP_TEMPLATE_VIS basic_istringstream;
141template <class _CharT, class _Traits = char_traits<_CharT>,
142 class _Allocator = allocator<_CharT> >
143 class _LIBCPP_TEMPLATE_VIS basic_ostringstream;
144template <class _CharT, class _Traits = char_traits<_CharT>,
145 class _Allocator = allocator<_CharT> >
146 class _LIBCPP_TEMPLATE_VIS basic_stringstream;
147
148template <class _CharT, class _Traits = char_traits<_CharT> >
149 class _LIBCPP_TEMPLATE_VIS basic_filebuf;
150template <class _CharT, class _Traits = char_traits<_CharT> >
151 class _LIBCPP_TEMPLATE_VIS basic_ifstream;
152template <class _CharT, class _Traits = char_traits<_CharT> >
153 class _LIBCPP_TEMPLATE_VIS basic_ofstream;
154template <class _CharT, class _Traits = char_traits<_CharT> >
155 class _LIBCPP_TEMPLATE_VIS basic_fstream;
156
157template <class _CharT, class _Traits = char_traits<_CharT> >
158 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator;
159template <class _CharT, class _Traits = char_traits<_CharT> >
160 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator;
161
162typedef basic_ios<char> ios;
163#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
164typedef basic_ios<wchar_t> wios;
165#endif
166
167typedef basic_streambuf<char> streambuf;
168typedef basic_istream<char> istream;
169typedef basic_ostream<char> ostream;
170typedef basic_iostream<char> iostream;
171
172typedef basic_stringbuf<char> stringbuf;
173typedef basic_istringstream<char> istringstream;
174typedef basic_ostringstream<char> ostringstream;
175typedef basic_stringstream<char> stringstream;
176
177typedef basic_filebuf<char> filebuf;
178typedef basic_ifstream<char> ifstream;
179typedef basic_ofstream<char> ofstream;
180typedef basic_fstream<char> fstream;
181
182#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
183typedef basic_streambuf<wchar_t> wstreambuf;
184typedef basic_istream<wchar_t> wistream;
185typedef basic_ostream<wchar_t> wostream;
186typedef basic_iostream<wchar_t> wiostream;
187
188typedef basic_stringbuf<wchar_t> wstringbuf;
189typedef basic_istringstream<wchar_t> wistringstream;
190typedef basic_ostringstream<wchar_t> wostringstream;
191typedef basic_stringstream<wchar_t> wstringstream;
192
193typedef basic_filebuf<wchar_t> wfilebuf;
194typedef basic_ifstream<wchar_t> wifstream;
195typedef basic_ofstream<wchar_t> wofstream;
196typedef basic_fstream<wchar_t> wfstream;
197#endif
198
199template <class _CharT, class _Traits>
200 class _LIBCPP_PREFERRED_NAME(ios) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wios)) basic_ios;
201
202template <class _CharT, class _Traits>
203 class _LIBCPP_PREFERRED_NAME(streambuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstreambuf)) basic_streambuf;
204template <class _CharT, class _Traits>
205 class _LIBCPP_PREFERRED_NAME(istream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wistream)) basic_istream;
206template <class _CharT, class _Traits>
207 class _LIBCPP_PREFERRED_NAME(ostream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wostream)) basic_ostream;
208template <class _CharT, class _Traits>
209 class _LIBCPP_PREFERRED_NAME(iostream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wiostream)) basic_iostream;
210
211template <class _CharT, class _Traits, class _Allocator>
212 class _LIBCPP_PREFERRED_NAME(stringbuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstringbuf)) basic_stringbuf;
213template <class _CharT, class _Traits, class _Allocator>
214 class _LIBCPP_PREFERRED_NAME(istringstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wistringstream)) basic_istringstream;
215template <class _CharT, class _Traits, class _Allocator>
216 class _LIBCPP_PREFERRED_NAME(ostringstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wostringstream)) basic_ostringstream;
217template <class _CharT, class _Traits, class _Allocator>
218 class _LIBCPP_PREFERRED_NAME(stringstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstringstream)) basic_stringstream;
219
220template <class _CharT, class _Traits>
221 class _LIBCPP_PREFERRED_NAME(filebuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wfilebuf)) basic_filebuf;
222template <class _CharT, class _Traits>
223 class _LIBCPP_PREFERRED_NAME(ifstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wifstream)) basic_ifstream;
224template <class _CharT, class _Traits>
225 class _LIBCPP_PREFERRED_NAME(ofstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wofstream)) basic_ofstream;
226template <class _CharT, class _Traits>
227 class _LIBCPP_PREFERRED_NAME(fstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wfstream)) basic_fstream;
228
229template <class _State> class _LIBCPP_TEMPLATE_VIS fpos;
230typedef fpos<mbstate_t> streampos;
231typedef fpos<mbstate_t> wstreampos;
232#ifndef _LIBCPP_HAS_NO_CHAR8_T
233typedef fpos<mbstate_t> u8streampos;
234#endif
235typedef fpos<mbstate_t> u16streampos;
236typedef fpos<mbstate_t> u32streampos;
237
238#if defined(_NEWLIB_VERSION)
239// On newlib, off_t is 'long int'
240typedef long int streamoff; // for char_traits in <string>
241#else
242typedef long long streamoff; // for char_traits in <string>
243#endif
244
245template <class _CharT, // for <stdexcept>
246 class _Traits = char_traits<_CharT>,
247 class _Allocator = allocator<_CharT> >
248 class _LIBCPP_TEMPLATE_VIS basic_string;
249typedef basic_string<char, char_traits<char>, allocator<char> > string;
250#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
251typedef basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > wstring;
252#endif
253
254template <class _CharT, class _Traits, class _Allocator>
255 class _LIBCPP_PREFERRED_NAME(string) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstring)) basic_string;
256
257// Include other forward declarations here
258template <class _Tp, class _Alloc = allocator<_Tp> >
259class _LIBCPP_TEMPLATE_VIS vector;
260
261template <class _CharT, class _Traits>
262class __save_flags
263{
264 typedef basic_ios<_CharT, _Traits> __stream_type;
265 typedef typename __stream_type::fmtflags fmtflags;
266
267 __stream_type& __stream_;
268 fmtflags __fmtflags_;
269 _CharT __fill_;
270
271 __save_flags(const __save_flags&);
272 __save_flags& operator=(const __save_flags&);
273public:
274 _LIBCPP_INLINE_VISIBILITY
275 explicit __save_flags(__stream_type& __stream)
276 : __stream_(__stream),
277 __fmtflags_(__stream.flags()),
278 __fill_(__stream.fill())
279 {}
280 _LIBCPP_INLINE_VISIBILITY
281 ~__save_flags()
282 {
283 __stream_.flags(__fmtflags_);
284 __stream_.fill(__fill_);
285 }
286};
287
288_LIBCPP_END_NAMESPACE_STD
289
290#endif // _LIBCPP_IOSFWD
291

source code of flutter_engine/third_party/libcxx/include/iosfwd