1// -*- C++ -*- 2//===--------------------------- iosfwd -----------------------------------===// 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; 87typedef fpos<char_traits<char>::state_type> streampos; 88typedef fpos<char_traits<wchar_t>::state_type> wstreampos; 89 90} // std 91 92*/ 93 94#include <__config> 95#include <wchar.h> // for mbstate_t 96 97#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 98#pragma GCC system_header 99#endif 100 101_LIBCPP_BEGIN_NAMESPACE_STD 102 103class _LIBCPP_TYPE_VIS ios_base; 104 105template<class _CharT> struct _LIBCPP_TEMPLATE_VIS char_traits; 106template<> struct char_traits<char>; 107#ifndef _LIBCPP_NO_HAS_CHAR8_T 108template<> struct char_traits<char8_t>; 109#endif 110template<> struct char_traits<char16_t>; 111template<> struct char_traits<char32_t>; 112template<> struct char_traits<wchar_t>; 113 114template<class _Tp> class _LIBCPP_TEMPLATE_VIS allocator; 115 116template <class _CharT, class _Traits = char_traits<_CharT> > 117 class _LIBCPP_TEMPLATE_VIS basic_ios; 118 119template <class _CharT, class _Traits = char_traits<_CharT> > 120 class _LIBCPP_TEMPLATE_VIS basic_streambuf; 121template <class _CharT, class _Traits = char_traits<_CharT> > 122 class _LIBCPP_TEMPLATE_VIS basic_istream; 123template <class _CharT, class _Traits = char_traits<_CharT> > 124 class _LIBCPP_TEMPLATE_VIS basic_ostream; 125template <class _CharT, class _Traits = char_traits<_CharT> > 126 class _LIBCPP_TEMPLATE_VIS basic_iostream; 127 128template <class _CharT, class _Traits = char_traits<_CharT>, 129 class _Allocator = allocator<_CharT> > 130 class _LIBCPP_TEMPLATE_VIS basic_stringbuf; 131template <class _CharT, class _Traits = char_traits<_CharT>, 132 class _Allocator = allocator<_CharT> > 133 class _LIBCPP_TEMPLATE_VIS basic_istringstream; 134template <class _CharT, class _Traits = char_traits<_CharT>, 135 class _Allocator = allocator<_CharT> > 136 class _LIBCPP_TEMPLATE_VIS basic_ostringstream; 137template <class _CharT, class _Traits = char_traits<_CharT>, 138 class _Allocator = allocator<_CharT> > 139 class _LIBCPP_TEMPLATE_VIS basic_stringstream; 140 141template <class _CharT, class _Traits = char_traits<_CharT> > 142 class _LIBCPP_TEMPLATE_VIS basic_filebuf; 143template <class _CharT, class _Traits = char_traits<_CharT> > 144 class _LIBCPP_TEMPLATE_VIS basic_ifstream; 145template <class _CharT, class _Traits = char_traits<_CharT> > 146 class _LIBCPP_TEMPLATE_VIS basic_ofstream; 147template <class _CharT, class _Traits = char_traits<_CharT> > 148 class _LIBCPP_TEMPLATE_VIS basic_fstream; 149 150template <class _CharT, class _Traits = char_traits<_CharT> > 151 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator; 152template <class _CharT, class _Traits = char_traits<_CharT> > 153 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator; 154 155typedef basic_ios<char> ios; 156typedef basic_ios<wchar_t> wios; 157 158typedef basic_streambuf<char> streambuf; 159typedef basic_istream<char> istream; 160typedef basic_ostream<char> ostream; 161typedef basic_iostream<char> iostream; 162 163typedef basic_stringbuf<char> stringbuf; 164typedef basic_istringstream<char> istringstream; 165typedef basic_ostringstream<char> ostringstream; 166typedef basic_stringstream<char> stringstream; 167 168typedef basic_filebuf<char> filebuf; 169typedef basic_ifstream<char> ifstream; 170typedef basic_ofstream<char> ofstream; 171typedef basic_fstream<char> fstream; 172 173typedef basic_streambuf<wchar_t> wstreambuf; 174typedef basic_istream<wchar_t> wistream; 175typedef basic_ostream<wchar_t> wostream; 176typedef basic_iostream<wchar_t> wiostream; 177 178typedef basic_stringbuf<wchar_t> wstringbuf; 179typedef basic_istringstream<wchar_t> wistringstream; 180typedef basic_ostringstream<wchar_t> wostringstream; 181typedef basic_stringstream<wchar_t> wstringstream; 182 183typedef basic_filebuf<wchar_t> wfilebuf; 184typedef basic_ifstream<wchar_t> wifstream; 185typedef basic_ofstream<wchar_t> wofstream; 186typedef basic_fstream<wchar_t> wfstream; 187 188template <class _CharT, class _Traits> 189 class _LIBCPP_PREFERRED_NAME(ios) _LIBCPP_PREFERRED_NAME(wios) basic_ios; 190 191template <class _CharT, class _Traits> 192 class _LIBCPP_PREFERRED_NAME(streambuf) _LIBCPP_PREFERRED_NAME(wstreambuf) basic_streambuf; 193template <class _CharT, class _Traits> 194 class _LIBCPP_PREFERRED_NAME(istream) _LIBCPP_PREFERRED_NAME(wistream) basic_istream; 195template <class _CharT, class _Traits> 196 class _LIBCPP_PREFERRED_NAME(ostream) _LIBCPP_PREFERRED_NAME(wostream) basic_ostream; 197template <class _CharT, class _Traits> 198 class _LIBCPP_PREFERRED_NAME(iostream) _LIBCPP_PREFERRED_NAME(wiostream) basic_iostream; 199 200template <class _CharT, class _Traits, class _Allocator> 201 class _LIBCPP_PREFERRED_NAME(stringbuf) _LIBCPP_PREFERRED_NAME(wstringbuf) basic_stringbuf; 202template <class _CharT, class _Traits, class _Allocator> 203 class _LIBCPP_PREFERRED_NAME(istringstream) _LIBCPP_PREFERRED_NAME(wistringstream) basic_istringstream; 204template <class _CharT, class _Traits, class _Allocator> 205 class _LIBCPP_PREFERRED_NAME(ostringstream) _LIBCPP_PREFERRED_NAME(wostringstream) basic_ostringstream; 206template <class _CharT, class _Traits, class _Allocator> 207 class _LIBCPP_PREFERRED_NAME(stringstream) _LIBCPP_PREFERRED_NAME(wstringstream) basic_stringstream; 208 209template <class _CharT, class _Traits> 210 class _LIBCPP_PREFERRED_NAME(filebuf) _LIBCPP_PREFERRED_NAME(wfilebuf) basic_filebuf; 211template <class _CharT, class _Traits> 212 class _LIBCPP_PREFERRED_NAME(ifstream) _LIBCPP_PREFERRED_NAME(wifstream) basic_ifstream; 213template <class _CharT, class _Traits> 214 class _LIBCPP_PREFERRED_NAME(ofstream) _LIBCPP_PREFERRED_NAME(wofstream) basic_ofstream; 215template <class _CharT, class _Traits> 216 class _LIBCPP_PREFERRED_NAME(fstream) _LIBCPP_PREFERRED_NAME(wfstream) basic_fstream; 217 218template <class _State> class _LIBCPP_TEMPLATE_VIS fpos; 219typedef fpos<mbstate_t> streampos; 220typedef fpos<mbstate_t> wstreampos; 221#ifndef _LIBCPP_NO_HAS_CHAR8_T 222typedef fpos<mbstate_t> u8streampos; 223#endif 224#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 225typedef fpos<mbstate_t> u16streampos; 226typedef fpos<mbstate_t> u32streampos; 227#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 228 229#if defined(_NEWLIB_VERSION) 230// On newlib, off_t is 'long int' 231typedef long int streamoff; // for char_traits in <string> 232#else 233typedef long long streamoff; // for char_traits in <string> 234#endif 235 236template <class _CharT, // for <stdexcept> 237 class _Traits = char_traits<_CharT>, 238 class _Allocator = allocator<_CharT> > 239 class _LIBCPP_TEMPLATE_VIS basic_string; 240typedef basic_string<char, char_traits<char>, allocator<char> > string; 241typedef basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > wstring; 242 243template <class _CharT, class _Traits, class _Allocator> 244 class _LIBCPP_PREFERRED_NAME(string) _LIBCPP_PREFERRED_NAME(wstring) basic_string; 245 246// Include other forward declarations here 247template <class _Tp, class _Alloc = allocator<_Tp> > 248class _LIBCPP_TEMPLATE_VIS vector; 249 250template <class _CharT, class _Traits> 251class __save_flags 252{ 253 typedef basic_ios<_CharT, _Traits> __stream_type; 254 typedef typename __stream_type::fmtflags fmtflags; 255 256 __stream_type& __stream_; 257 fmtflags __fmtflags_; 258 _CharT __fill_; 259 260 __save_flags(const __save_flags&); 261 __save_flags& operator=(const __save_flags&); 262public: 263 _LIBCPP_INLINE_VISIBILITY 264 explicit __save_flags(__stream_type& __stream) 265 : __stream_(__stream), 266 __fmtflags_(__stream.flags()), 267 __fill_(__stream.fill()) 268 {} 269 _LIBCPP_INLINE_VISIBILITY 270 ~__save_flags() 271 { 272 __stream_.flags(__fmtflags_); 273 __stream_.fill(__fill_); 274 } 275}; 276 277_LIBCPP_END_NAMESPACE_STD 278 279#endif // _LIBCPP_IOSFWD 280