emscripten/system/include/libcxx/streambuf at universal-python · JavaScriptIOT/emscripten · GitHub

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// -*- C++ -*-

//===------------------------- streambuf ----------------------------------===//

// The LLVM Compiler Infrastructure

// This file is dual licensed under the MIT and the University of Illinois Open

// Source Licenses. See LICENSE.TXT for details.

//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_STEAMBUF

#define _LIBCPP_STEAMBUF

streambuf synopsis

namespace std

{

template <class charT, class traits = char_traits<charT> >

class basic_streambuf

{

public:

// types:

typedef charT char_type;

typedef traits traits_type;

typedef typename traits_type::int_type int_type;

typedef typename traits_type::pos_type pos_type;

typedef typename traits_type::off_type off_type;

virtual ~basic_streambuf();

// 27.6.2.2.1 locales:

locale pubimbue(const locale& loc);

locale getloc() const;

// 27.6.2.2.2 buffer and positioning:

basic_streambuf* pubsetbuf(char_type* s, streamsize n);

pos_type pubseekoff(off_type off, ios_base::seekdir way,

ios_base::openmode which = ios_base::in | ios_base::out);

pos_type pubseekpos(pos_type sp,

ios_base::openmode which = ios_base::in | ios_base::out);

int pubsync();

// Get and put areas:

// 27.6.2.2.3 Get area:

streamsize in_avail();

int_type snextc();

int_type sbumpc();

int_type sgetc();

streamsize sgetn(char_type* s, streamsize n);

// 27.6.2.2.4 Putback:

int_type sputbackc(char_type c);

int_type sungetc();

// 27.6.2.2.5 Put area:

int_type sputc(char_type c);

streamsize sputn(const char_type* s, streamsize n);

protected:

basic_streambuf();

basic_streambuf(const basic_streambuf& rhs);

basic_streambuf& operator=(const basic_streambuf& rhs);

void swap(basic_streambuf& rhs);

// 27.6.2.3.2 Get area:

char_type* eback() const;

char_type* gptr() const;

char_type* egptr() const;

void gbump(int n);

void setg(char_type* gbeg, char_type* gnext, char_type* gend);

// 27.6.2.3.3 Put area:

char_type* pbase() const;

char_type* pptr() const;

char_type* epptr() const;

void pbump(int n);

void setp(char_type* pbeg, char_type* pend);

// 27.6.2.4 virtual functions:

// 27.6.2.4.1 Locales:

virtual void imbue(const locale& loc);

// 27.6.2.4.2 Buffer management and positioning:

virtual basic_streambuf* setbuf(char_type* s, streamsize n);

virtual pos_type seekoff(off_type off, ios_base::seekdir way,

ios_base::openmode which = ios_base::in | ios_base::out);

virtual pos_type seekpos(pos_type sp,

ios_base::openmode which = ios_base::in | ios_base::out);

virtual int sync();

// 27.6.2.4.3 Get area:

virtual streamsize showmanyc();

virtual streamsize xsgetn(char_type* s, streamsize n);

virtual int_type underflow();

virtual int_type uflow();

// 27.6.2.4.4 Putback:

virtual int_type pbackfail(int_type c = traits_type::eof());

// 27.6.2.4.5 Put area:

virtual streamsize xsputn(const char_type* s, streamsize n);

virtual int_type overflow (int_type c = traits_type::eof());

};

} // std

#include <__config>

#include <iosfwd>

#include <ios>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

#pragma GCC system_header

#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _CharT, class _Traits>

class _LIBCPP_TYPE_VIS_ONLY basic_streambuf

{

public:

// types:

typedef _CharT char_type;

typedef _Traits traits_type;

typedef typename traits_type::int_type int_type;

typedef typename traits_type::pos_type pos_type;

typedef typename traits_type::off_type off_type;

virtual ~basic_streambuf();

// 27.6.2.2.1 locales:

locale pubimbue(const locale& __loc);

locale getloc() const;

// 27.6.2.2.2 buffer and positioning:

basic_streambuf* pubsetbuf(char_type* __s, streamsize __n);

pos_type pubseekoff(off_type __off, ios_base::seekdir __way,

ios_base::openmode __which = ios_base::in | ios_base::out);

pos_type pubseekpos(pos_type __sp,

ios_base::openmode __which = ios_base::in | ios_base::out);

int pubsync();

// Get and put areas:

// 27.6.2.2.3 Get area:

streamsize in_avail();

int_type snextc();

int_type sbumpc();

int_type sgetc();

streamsize sgetn(char_type* __s, streamsize __n);

// 27.6.2.2.4 Putback:

int_type sputbackc(char_type __c);

int_type sungetc();

// 27.6.2.2.5 Put area:

int_type sputc(char_type __c);

streamsize sputn(const char_type* __s, streamsize __n);

protected:

basic_streambuf();

basic_streambuf(const basic_streambuf& __rhs);

basic_streambuf& operator=(const basic_streambuf& __rhs);

void swap(basic_streambuf& __rhs);

// 27.6.2.3.2 Get area:

_LIBCPP_ALWAYS_INLINE char_type* eback() const {return __binp_;}

_LIBCPP_ALWAYS_INLINE char_type* gptr() const {return __ninp_;}

_LIBCPP_ALWAYS_INLINE char_type* egptr() const {return __einp_;}

void gbump(int __n);

void setg(char_type* __gbeg, char_type* __gnext, char_type* __gend);

// 27.6.2.3.3 Put area:

_LIBCPP_ALWAYS_INLINE char_type* pbase() const {return __bout_;}

_LIBCPP_ALWAYS_INLINE char_type* pptr() const {return __nout_;}

_LIBCPP_ALWAYS_INLINE char_type* epptr() const {return __eout_;}

void pbump(int __n);

void setp(char_type* __pbeg, char_type* __pend);

// 27.6.2.4 virtual functions:

// 27.6.2.4.1 Locales:

virtual void imbue(const locale& __loc);

// 27.6.2.4.2 Buffer management and positioning:

virtual basic_streambuf* setbuf(char_type* __s, streamsize __n);

virtual pos_type seekoff(off_type __off, ios_base::seekdir __way,

ios_base::openmode __which = ios_base::in | ios_base::out);

virtual pos_type seekpos(pos_type __sp,

ios_base::openmode __which = ios_base::in | ios_base::out);

virtual int sync();

// 27.6.2.4.3 Get area:

virtual streamsize showmanyc();

virtual streamsize xsgetn(char_type* __s, streamsize __n);

virtual int_type underflow();

virtual int_type uflow();

// 27.6.2.4.4 Putback:

virtual int_type pbackfail(int_type __c = traits_type::eof());

// 27.6.2.4.5 Put area:

virtual streamsize xsputn(const char_type* __s, streamsize __n);

virtual int_type overflow(int_type __c = traits_type::eof());

private:

locale __loc_;

char_type* __binp_;

char_type* __ninp_;

char_type* __einp_;

char_type* __bout_;

char_type* __nout_;

char_type* __eout_;

};

template <class _CharT, class _Traits>

basic_streambuf<_CharT, _Traits>::~basic_streambuf()

{

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

locale

basic_streambuf<_CharT, _Traits>::pubimbue(const locale& __loc)

{

imbue(__loc);

locale __r = __loc_;

__loc_ = __loc;

return __r;

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

locale

basic_streambuf<_CharT, _Traits>::getloc() const

{

return __loc_;

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

basic_streambuf<_CharT, _Traits>*

basic_streambuf<_CharT, _Traits>::pubsetbuf(char_type* __s, streamsize __n)

{

return setbuf(__s, __n);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::pos_type

basic_streambuf<_CharT, _Traits>::pubseekoff(off_type __off,

ios_base::seekdir __way,

ios_base::openmode __which)

{

return seekoff(__off, __way, __which);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::pos_type

basic_streambuf<_CharT, _Traits>::pubseekpos(pos_type __sp,

ios_base::openmode __which)

{

return seekpos(__sp, __which);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

int

basic_streambuf<_CharT, _Traits>::pubsync()

{

return sync();

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

streamsize

basic_streambuf<_CharT, _Traits>::in_avail()

{

if (__ninp_ < __einp_)

return static_cast<streamsize>(__einp_ - __ninp_);

return showmanyc();

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::snextc()

{

if (sbumpc() == traits_type::eof())

return traits_type::eof();

return sgetc();

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::sbumpc()

{

if (__ninp_ == __einp_)

return uflow();

return traits_type::to_int_type(*__ninp_++);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::sgetc()

{

if (__ninp_ == __einp_)

return underflow();

return traits_type::to_int_type(*__ninp_);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

streamsize

basic_streambuf<_CharT, _Traits>::sgetn(char_type* __s, streamsize __n)

{

return xsgetn(__s, __n);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::sputbackc(char_type __c)

{

if (__binp_ == __ninp_ || !traits_type::eq(__c, __ninp_[-1]))

return pbackfail(traits_type::to_int_type(__c));

return traits_type::to_int_type(*--__ninp_);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::sungetc()

{

if (__binp_ == __ninp_)

return pbackfail();

return traits_type::to_int_type(*--__ninp_);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::sputc(char_type __c)

{

if (__nout_ == __eout_)

return overflow(traits_type::to_int_type(__c));

*__nout_++ = __c;

return traits_type::to_int_type(__c);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

streamsize

basic_streambuf<_CharT, _Traits>::sputn(const char_type* __s, streamsize __n)

{

return xsputn(__s, __n);

}

template <class _CharT, class _Traits>

basic_streambuf<_CharT, _Traits>::basic_streambuf()

: __binp_(0),

__ninp_(0),

__einp_(0),

__bout_(0),

__nout_(0),

__eout_(0)

{

}

template <class _CharT, class _Traits>

basic_streambuf<_CharT, _Traits>::basic_streambuf(const basic_streambuf& __sb)

: __loc_(__sb.__loc_),

__binp_(__sb.__binp_),

__ninp_(__sb.__ninp_),

__einp_(__sb.__einp_),

__bout_(__sb.__bout_),

__nout_(__sb.__nout_),

__eout_(__sb.__eout_)

{

}

template <class _CharT, class _Traits>

basic_streambuf<_CharT, _Traits>&

basic_streambuf<_CharT, _Traits>::operator=(const basic_streambuf& __sb)

{

__loc_ = __sb.__loc_;

__binp_ = __sb.__binp_;

__ninp_ = __sb.__ninp_;

__einp_ = __sb.__einp_;

__bout_ = __sb.__bout_;

__nout_ = __sb.__nout_;

__eout_ = __sb.__eout_;

return *this;

}

template <class _CharT, class _Traits>

void

basic_streambuf<_CharT, _Traits>::swap(basic_streambuf& __sb)

{

_VSTD::swap(__loc_, __sb.__loc_);

_VSTD::swap(__binp_, __sb.__binp_);

_VSTD::swap(__ninp_, __sb.__ninp_);

_VSTD::swap(__einp_, __sb.__einp_);

_VSTD::swap(__bout_, __sb.__bout_);

_VSTD::swap(__nout_, __sb.__nout_);

_VSTD::swap(__eout_, __sb.__eout_);

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

void

basic_streambuf<_CharT, _Traits>::gbump(int __n)

{

__ninp_ += __n;

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

void

basic_streambuf<_CharT, _Traits>::setg(char_type* __gbeg, char_type* __gnext,

char_type* __gend)

{

__binp_ = __gbeg;

__ninp_ = __gnext;

__einp_ = __gend;

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

void

basic_streambuf<_CharT, _Traits>::pbump(int __n)

{

__nout_ += __n;

}

template <class _CharT, class _Traits>

inline _LIBCPP_INLINE_VISIBILITY

void

basic_streambuf<_CharT, _Traits>::setp(char_type* __pbeg, char_type* __pend)

{

__bout_ = __nout_ = __pbeg;

__eout_ = __pend;

}

template <class _CharT, class _Traits>

void

basic_streambuf<_CharT, _Traits>::imbue(const locale&)

{

}

template <class _CharT, class _Traits>

basic_streambuf<_CharT, _Traits>*

basic_streambuf<_CharT, _Traits>::setbuf(char_type*, streamsize)

{

return this;

}

template <class _CharT, class _Traits>

typename basic_streambuf<_CharT, _Traits>::pos_type

basic_streambuf<_CharT, _Traits>::seekoff(off_type, ios_base::seekdir,

ios_base::openmode)

{

return pos_type(off_type(-1));

}

template <class _CharT, class _Traits>

typename basic_streambuf<_CharT, _Traits>::pos_type

basic_streambuf<_CharT, _Traits>::seekpos(pos_type, ios_base::openmode)

{

return pos_type(off_type(-1));

}

template <class _CharT, class _Traits>

int

basic_streambuf<_CharT, _Traits>::sync()

{

return 0;

}

template <class _CharT, class _Traits>

streamsize

basic_streambuf<_CharT, _Traits>::showmanyc()

{

return 0;

}

template <class _CharT, class _Traits>

streamsize

basic_streambuf<_CharT, _Traits>::xsgetn(char_type* __s, streamsize __n)

{

const int_type __eof = traits_type::eof();

int_type __c;

streamsize __i = 0;

for (;__i < __n; ++__i, ++__s)

{

if (__ninp_ < __einp_)

*__s = *__ninp_++;

else if ((__c = uflow()) != __eof)

*__s = traits_type::to_char_type(__c);

else

break;

}

return __i;

}

template <class _CharT, class _Traits>

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::underflow()

{

return traits_type::eof();

}

template <class _CharT, class _Traits>

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::uflow()

{

if (underflow() == traits_type::eof())

return traits_type::eof();

return traits_type::to_int_type(*__ninp_++);

}

template <class _CharT, class _Traits>

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::pbackfail(int_type)

{

return traits_type::eof();

}

template <class _CharT, class _Traits>

streamsize

basic_streambuf<_CharT, _Traits>::xsputn(const char_type* __s, streamsize __n)

{

streamsize __i = 0;

int_type __eof = traits_type::eof();

for (; __i < __n; ++__s, ++__i)

{

if (__nout_ < __eout_)

*__nout_++ = *__s;

else if (overflow(traits_type::to_int_type(*__s)) == __eof)

break;

}

return __i;

}

template <class _CharT, class _Traits>

typename basic_streambuf<_CharT, _Traits>::int_type

basic_streambuf<_CharT, _Traits>::overflow(int_type)

{

return traits_type::eof();

}

_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_streambuf<char>)

_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_streambuf<wchar_t>)

_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_ios<char>)

_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_ios<wchar_t>)

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP_STEAMBUF

emscripten/system/include/libcxx/streambuf at universal-python · JavaScriptIOT/emscripten · GitHub

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