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; 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 <__config> 98#include <wchar.h> // for mbstate_t 99 100#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 101#pragma GCC system_header 102#endif 103 104_LIBCPP_BEGIN_NAMESPACE_STD 105 106class _LIBCPP_TYPE_VIS ios_base; 107 108template<class _CharT> struct _LIBCPP_TEMPLATE_VIS char_traits; 109template<> struct char_traits<char>; 110#ifndef _LIBCPP_HAS_NO_CHAR8_T 111template<> struct char_traits<char8_t>; 112#endif 113template<> struct char_traits<char16_t>; 114template<> struct char_traits<char32_t>; 115template<> struct char_traits<wchar_t>; 116 117template<class _Tp> class _LIBCPP_TEMPLATE_VIS allocator; 118 119template <class _CharT, class _Traits = char_traits<_CharT> > 120 class _LIBCPP_TEMPLATE_VIS basic_ios; 121 122template <class _CharT, class _Traits = char_traits<_CharT> > 123 class _LIBCPP_TEMPLATE_VIS basic_streambuf; 124template <class _CharT, class _Traits = char_traits<_CharT> > 125 class _LIBCPP_TEMPLATE_VIS basic_istream; 126template <class _CharT, class _Traits = char_traits<_CharT> > 127 class _LIBCPP_TEMPLATE_VIS basic_ostream; 128template <class _CharT, class _Traits = char_traits<_CharT> > 129 class _LIBCPP_TEMPLATE_VIS basic_iostream; 130 131template <class _CharT, class _Traits = char_traits<_CharT>, 132 class _Allocator = allocator<_CharT> > 133 class _LIBCPP_TEMPLATE_VIS basic_stringbuf; 134template <class _CharT, class _Traits = char_traits<_CharT>, 135 class _Allocator = allocator<_CharT> > 136 class _LIBCPP_TEMPLATE_VIS basic_istringstream; 137template <class _CharT, class _Traits = char_traits<_CharT>, 138 class _Allocator = allocator<_CharT> > 139 class _LIBCPP_TEMPLATE_VIS basic_ostringstream; 140template <class _CharT, class _Traits = char_traits<_CharT>, 141 class _Allocator = allocator<_CharT> > 142 class _LIBCPP_TEMPLATE_VIS basic_stringstream; 143 144template <class _CharT, class _Traits = char_traits<_CharT> > 145 class _LIBCPP_TEMPLATE_VIS basic_filebuf; 146template <class _CharT, class _Traits = char_traits<_CharT> > 147 class _LIBCPP_TEMPLATE_VIS basic_ifstream; 148template <class _CharT, class _Traits = char_traits<_CharT> > 149 class _LIBCPP_TEMPLATE_VIS basic_ofstream; 150template <class _CharT, class _Traits = char_traits<_CharT> > 151 class _LIBCPP_TEMPLATE_VIS basic_fstream; 152 153template <class _CharT, class _Traits = char_traits<_CharT> > 154 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator; 155template <class _CharT, class _Traits = char_traits<_CharT> > 156 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator; 157 158typedef basic_ios<char> ios; 159typedef basic_ios<wchar_t> wios; 160 161typedef basic_streambuf<char> streambuf; 162typedef basic_istream<char> istream; 163typedef basic_ostream<char> ostream; 164typedef basic_iostream<char> iostream; 165 166typedef basic_stringbuf<char> stringbuf; 167typedef basic_istringstream<char> istringstream; 168typedef basic_ostringstream<char> ostringstream; 169typedef basic_stringstream<char> stringstream; 170 171typedef basic_filebuf<char> filebuf; 172typedef basic_ifstream<char> ifstream; 173typedef basic_ofstream<char> ofstream; 174typedef basic_fstream<char> fstream; 175 176typedef basic_streambuf<wchar_t> wstreambuf; 177typedef basic_istream<wchar_t> wistream; 178typedef basic_ostream<wchar_t> wostream; 179typedef basic_iostream<wchar_t> wiostream; 180 181typedef basic_stringbuf<wchar_t> wstringbuf; 182typedef basic_istringstream<wchar_t> wistringstream; 183typedef basic_ostringstream<wchar_t> wostringstream; 184typedef basic_stringstream<wchar_t> wstringstream; 185 186typedef basic_filebuf<wchar_t> wfilebuf; 187typedef basic_ifstream<wchar_t> wifstream; 188typedef basic_ofstream<wchar_t> wofstream; 189typedef basic_fstream<wchar_t> wfstream; 190 191template <class _CharT, class _Traits> 192 class _LIBCPP_PREFERRED_NAME(ios) _LIBCPP_PREFERRED_NAME(wios) basic_ios; 193 194template <class _CharT, class _Traits> 195 class _LIBCPP_PREFERRED_NAME(streambuf) _LIBCPP_PREFERRED_NAME(wstreambuf) basic_streambuf; 196template <class _CharT, class _Traits> 197 class _LIBCPP_PREFERRED_NAME(istream) _LIBCPP_PREFERRED_NAME(wistream) basic_istream; 198template <class _CharT, class _Traits> 199 class _LIBCPP_PREFERRED_NAME(ostream) _LIBCPP_PREFERRED_NAME(wostream) basic_ostream; 200template <class _CharT, class _Traits> 201 class _LIBCPP_PREFERRED_NAME(iostream) _LIBCPP_PREFERRED_NAME(wiostream) basic_iostream; 202 203template <class _CharT, class _Traits, class _Allocator> 204 class _LIBCPP_PREFERRED_NAME(stringbuf) _LIBCPP_PREFERRED_NAME(wstringbuf) basic_stringbuf; 205template <class _CharT, class _Traits, class _Allocator> 206 class _LIBCPP_PREFERRED_NAME(istringstream) _LIBCPP_PREFERRED_NAME(wistringstream) basic_istringstream; 207template <class _CharT, class _Traits, class _Allocator> 208 class _LIBCPP_PREFERRED_NAME(ostringstream) _LIBCPP_PREFERRED_NAME(wostringstream) basic_ostringstream; 209template <class _CharT, class _Traits, class _Allocator> 210 class _LIBCPP_PREFERRED_NAME(stringstream) _LIBCPP_PREFERRED_NAME(wstringstream) basic_stringstream; 211 212template <class _CharT, class _Traits> 213 class _LIBCPP_PREFERRED_NAME(filebuf) _LIBCPP_PREFERRED_NAME(wfilebuf) basic_filebuf; 214template <class _CharT, class _Traits> 215 class _LIBCPP_PREFERRED_NAME(ifstream) _LIBCPP_PREFERRED_NAME(wifstream) basic_ifstream; 216template <class _CharT, class _Traits> 217 class _LIBCPP_PREFERRED_NAME(ofstream) _LIBCPP_PREFERRED_NAME(wofstream) basic_ofstream; 218template <class _CharT, class _Traits> 219 class _LIBCPP_PREFERRED_NAME(fstream) _LIBCPP_PREFERRED_NAME(wfstream) basic_fstream; 220 221template <class _State> class _LIBCPP_TEMPLATE_VIS fpos; 222typedef fpos<mbstate_t> streampos; 223typedef fpos<mbstate_t> wstreampos; 224#ifndef _LIBCPP_HAS_NO_CHAR8_T 225typedef fpos<mbstate_t> u8streampos; 226#endif 227#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 228typedef fpos<mbstate_t> u16streampos; 229typedef fpos<mbstate_t> u32streampos; 230#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 231 232#if defined(_NEWLIB_VERSION) 233// On newlib, off_t is 'long int' 234typedef long int streamoff; // for char_traits in <string> 235#else 236typedef long long streamoff; // for char_traits in <string> 237#endif 238 239template <class _CharT, // for <stdexcept> 240 class _Traits = char_traits<_CharT>, 241 class _Allocator = allocator<_CharT> > 242 class _LIBCPP_TEMPLATE_VIS basic_string; 243typedef basic_string<char, char_traits<char>, allocator<char> > string; 244typedef basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > wstring; 245 246template <class _CharT, class _Traits, class _Allocator> 247 class _LIBCPP_PREFERRED_NAME(string) _LIBCPP_PREFERRED_NAME(wstring) basic_string; 248 249// Include other forward declarations here 250template <class _Tp, class _Alloc = allocator<_Tp> > 251class _LIBCPP_TEMPLATE_VIS vector; 252 253template <class _CharT, class _Traits> 254class __save_flags 255{ 256 typedef basic_ios<_CharT, _Traits> __stream_type; 257 typedef typename __stream_type::fmtflags fmtflags; 258 259 __stream_type& __stream_; 260 fmtflags __fmtflags_; 261 _CharT __fill_; 262 263 __save_flags(const __save_flags&); 264 __save_flags& operator=(const __save_flags&); 265public: 266 _LIBCPP_INLINE_VISIBILITY 267 explicit __save_flags(__stream_type& __stream) 268 : __stream_(__stream), 269 __fmtflags_(__stream.flags()), 270 __fill_(__stream.fill()) 271 {} 272 _LIBCPP_INLINE_VISIBILITY 273 ~__save_flags() 274 { 275 __stream_.flags(__fmtflags_); 276 __stream_.fill(__fill_); 277 } 278}; 279 280_LIBCPP_END_NAMESPACE_STD 281 282#endif // _LIBCPP_IOSFWD 283