1//===------------------------ iostream.cpp --------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "__std_stream"
11#include "string"
12#include "new"
13
14_LIBCPP_BEGIN_NAMESPACE_STD
15
16#ifndef _LIBCPP_HAS_NO_STDIN
17_ALIGNAS_TYPE (istream)  _LIBCPP_FUNC_VIS char cin [sizeof(istream)];
18_ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin [sizeof(__stdinbuf <char>)];
19static mbstate_t mb_cin;
20_ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin [sizeof(wistream)];
21_ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin [sizeof(__stdinbuf <wchar_t>)];
22static mbstate_t mb_wcin;
23#endif
24
25#ifndef _LIBCPP_HAS_NO_STDOUT
26_ALIGNAS_TYPE (ostream)  _LIBCPP_FUNC_VIS char cout[sizeof(ostream)];
27_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)];
28static mbstate_t mb_cout;
29_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)];
30_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)];
31static mbstate_t mb_wcout;
32#endif
33
34_ALIGNAS_TYPE (ostream)  _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)];
35_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)];
36static mbstate_t mb_cerr;
37_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)];
38_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)];
39static mbstate_t mb_wcerr;
40
41_ALIGNAS_TYPE (ostream)  _LIBCPP_FUNC_VIS char clog[sizeof(ostream)];
42_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)];
43
44ios_base::Init __start_std_streams;
45
46ios_base::Init::Init()
47{
48#ifndef _LIBCPP_HAS_NO_STDIN
49    istream* cin_ptr  = ::new(cin)  istream(::new(__cin)  __stdinbuf <char>(stdin, &mb_cin));
50    wistream* wcin_ptr  = ::new(wcin)  wistream(::new(__wcin)  __stdinbuf <wchar_t>(stdin, &mb_wcin));
51#endif
52#ifndef _LIBCPP_HAS_NO_STDOUT
53    ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout));
54    wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout));
55#endif
56    ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr));
57                        ::new(clog) ostream(cerr_ptr->rdbuf());
58    wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr));
59                          ::new(wclog) wostream(wcerr_ptr->rdbuf());
60
61#if !defined(_LIBCPP_HAS_NO_STDIN) && !defined(_LIBCPP_HAS_NO_STDOUT)
62    cin_ptr->tie(cout_ptr);
63    wcin_ptr->tie(wcout_ptr);
64#endif
65    _VSTD::unitbuf(*cerr_ptr);
66    _VSTD::unitbuf(*wcerr_ptr);
67#ifndef _LIBCPP_HAS_NO_STDOUT
68    cerr_ptr->tie(cout_ptr);
69    wcerr_ptr->tie(wcout_ptr);
70#endif
71}
72
73ios_base::Init::~Init()
74{
75#ifndef _LIBCPP_HAS_NO_STDOUT
76    ostream* cout_ptr = reinterpret_cast<ostream*>(cout);
77    wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout);
78    cout_ptr->flush();
79    wcout_ptr->flush();
80#endif
81
82    ostream* clog_ptr = reinterpret_cast<ostream*>(clog);
83    wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog);
84    clog_ptr->flush();
85    wclog_ptr->flush();
86}
87
88_LIBCPP_END_NAMESPACE_STD
89