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 <__fwd/fstream.h> 100#include <__fwd/ios.h> 101#include <__fwd/istream.h> 102#include <__fwd/ostream.h> 103#include <__fwd/sstream.h> 104#include <__fwd/streambuf.h> 105#include <__fwd/string.h> 106#include <__std_mbstate_t.h> 107#include <version> 108 109#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 110# pragma GCC system_header 111#endif 112 113_LIBCPP_BEGIN_NAMESPACE_STD 114 115class _LIBCPP_EXPORTED_FROM_ABI ios_base; 116 117template <class _CharT, class _Traits = char_traits<_CharT> > 118 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator; 119template <class _CharT, class _Traits = char_traits<_CharT> > 120 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator; 121 122template <class _State> class _LIBCPP_TEMPLATE_VIS fpos; 123typedef fpos<mbstate_t> streampos; 124typedef fpos<mbstate_t> wstreampos; 125#ifndef _LIBCPP_HAS_NO_CHAR8_T 126typedef fpos<mbstate_t> u8streampos; 127#endif 128typedef fpos<mbstate_t> u16streampos; 129typedef fpos<mbstate_t> u32streampos; 130 131// Include other forward declarations here 132template <class _Tp, class _Alloc = allocator<_Tp> > 133class _LIBCPP_TEMPLATE_VIS vector; 134 135template <class _CharT, class _Traits> 136class __save_flags 137{ 138 typedef basic_ios<_CharT, _Traits> __stream_type; 139 typedef typename __stream_type::fmtflags fmtflags; 140 141 __stream_type& __stream_; 142 fmtflags __fmtflags_; 143 _CharT __fill_; 144 145 __save_flags(const __save_flags&); 146 __save_flags& operator=(const __save_flags&); 147public: 148 _LIBCPP_INLINE_VISIBILITY 149 explicit __save_flags(__stream_type& __stream) 150 : __stream_(__stream), 151 __fmtflags_(__stream.flags()), 152 __fill_(__stream.fill()) 153 {} 154 _LIBCPP_INLINE_VISIBILITY 155 ~__save_flags() 156 { 157 __stream_.flags(__fmtflags_); 158 __stream_.fill(__fill_); 159 } 160}; 161 162_LIBCPP_END_NAMESPACE_STD 163 164#endif // _LIBCPP_IOSFWD 165