--- /dev/null
+// istream classes -*- C++ -*-
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+// 2006, 2007, 2008, 2009, 2010, 2011
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file bits/istream.tcc
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{istream}
+ */
+
+//
+// ISO C++ 14882: 27.6.1 Input streams
+//
+
+#ifndef _ISTREAM_TCC
+#define _ISTREAM_TCC 1
+
+#pragma GCC system_header
+
+#include <bits/cxxabi_forced.h>
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>::sentry::
+ sentry(basic_istream<_CharT, _Traits>& __in, bool __noskip) : _M_ok(false)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ if (__in.good())
+ {
+ if (__in.tie())
+ __in.tie()->flush();
+ if (!__noskip && bool(__in.flags() & ios_base::skipws))
+ {
+ const __int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = __in.rdbuf();
+ __int_type __c = __sb->sgetc();
+
+ const __ctype_type& __ct = __check_facet(__in._M_ctype);
+ while (!traits_type::eq_int_type(__c, __eof)
+ && __ct.is(ctype_base::space,
+ traits_type::to_char_type(__c)))
+ __c = __sb->snextc();
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 195. Should basic_istream::sentry's constructor ever
+ // set eofbit?
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ }
+ }
+
+ if (__in.good() && __err == ios_base::goodbit)
+ _M_ok = true;
+ else
+ {
+ __err |= ios_base::failbit;
+ __in.setstate(__err);
+ }
+ }
+
+ template<typename _CharT, typename _Traits>
+ template<typename _ValueT>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ _M_extract(_ValueT& __v)
+ {
+ sentry __cerb(*this, false);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __v);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ operator>>(short& __n)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 118. basic_istream uses nonexistent num_get member functions.
+ sentry __cerb(*this, false);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ long __l;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __l);
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 696. istream::operator>>(int&) broken.
+ if (__l < __gnu_cxx::__numeric_traits<short>::__min)
+ {
+ __err |= ios_base::failbit;
+ __n = __gnu_cxx::__numeric_traits<short>::__min;
+ }
+ else if (__l > __gnu_cxx::__numeric_traits<short>::__max)
+ {
+ __err |= ios_base::failbit;
+ __n = __gnu_cxx::__numeric_traits<short>::__max;
+ }
+ else
+ __n = short(__l);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ operator>>(int& __n)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 118. basic_istream uses nonexistent num_get member functions.
+ sentry __cerb(*this, false);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ long __l;
+ const __num_get_type& __ng = __check_facet(this->_M_num_get);
+ __ng.get(*this, 0, *this, __err, __l);
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 696. istream::operator>>(int&) broken.
+ if (__l < __gnu_cxx::__numeric_traits<int>::__min)
+ {
+ __err |= ios_base::failbit;
+ __n = __gnu_cxx::__numeric_traits<int>::__min;
+ }
+ else if (__l > __gnu_cxx::__numeric_traits<int>::__max)
+ {
+ __err |= ios_base::failbit;
+ __n = __gnu_cxx::__numeric_traits<int>::__max;
+ }
+ else
+ __n = int(__l);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ operator>>(__streambuf_type* __sbout)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ sentry __cerb(*this, false);
+ if (__cerb && __sbout)
+ {
+ __try
+ {
+ bool __ineof;
+ if (!__copy_streambufs_eof(this->rdbuf(), __sbout, __ineof))
+ __err |= ios_base::failbit;
+ if (__ineof)
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::failbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::failbit); }
+ }
+ else if (!__sbout)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ typename basic_istream<_CharT, _Traits>::int_type
+ basic_istream<_CharT, _Traits>::
+ get(void)
+ {
+ const int_type __eof = traits_type::eof();
+ int_type __c = __eof;
+ _M_gcount = 0;
+ ios_base::iostate __err = ios_base::goodbit;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ __try
+ {
+ __c = this->rdbuf()->sbumpc();
+ // 27.6.1.1 paragraph 3
+ if (!traits_type::eq_int_type(__c, __eof))
+ _M_gcount = 1;
+ else
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ }
+ if (!_M_gcount)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
+ return __c;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ get(char_type& __c)
+ {
+ _M_gcount = 0;
+ ios_base::iostate __err = ios_base::goodbit;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ __try
+ {
+ const int_type __cb = this->rdbuf()->sbumpc();
+ // 27.6.1.1 paragraph 3
+ if (!traits_type::eq_int_type(__cb, traits_type::eof()))
+ {
+ _M_gcount = 1;
+ __c = traits_type::to_char_type(__cb);
+ }
+ else
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ }
+ if (!_M_gcount)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ get(char_type* __s, streamsize __n, char_type __delim)
+ {
+ _M_gcount = 0;
+ ios_base::iostate __err = ios_base::goodbit;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ __try
+ {
+ const int_type __idelim = traits_type::to_int_type(__delim);
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ int_type __c = __sb->sgetc();
+
+ while (_M_gcount + 1 < __n
+ && !traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __idelim))
+ {
+ *__s++ = traits_type::to_char_type(__c);
+ ++_M_gcount;
+ __c = __sb->snextc();
+ }
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ }
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 243. get and getline when sentry reports failure.
+ if (__n > 0)
+ *__s = char_type();
+ if (!_M_gcount)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ get(__streambuf_type& __sb, char_type __delim)
+ {
+ _M_gcount = 0;
+ ios_base::iostate __err = ios_base::goodbit;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ __try
+ {
+ const int_type __idelim = traits_type::to_int_type(__delim);
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __this_sb = this->rdbuf();
+ int_type __c = __this_sb->sgetc();
+ char_type __c2 = traits_type::to_char_type(__c);
+
+ while (!traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __idelim)
+ && !traits_type::eq_int_type(__sb.sputc(__c2), __eof))
+ {
+ ++_M_gcount;
+ __c = __this_sb->snextc();
+ __c2 = traits_type::to_char_type(__c);
+ }
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ }
+ if (!_M_gcount)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ getline(char_type* __s, streamsize __n, char_type __delim)
+ {
+ _M_gcount = 0;
+ ios_base::iostate __err = ios_base::goodbit;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ __try
+ {
+ const int_type __idelim = traits_type::to_int_type(__delim);
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ int_type __c = __sb->sgetc();
+
+ while (_M_gcount + 1 < __n
+ && !traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __idelim))
+ {
+ *__s++ = traits_type::to_char_type(__c);
+ __c = __sb->snextc();
+ ++_M_gcount;
+ }
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ else
+ {
+ if (traits_type::eq_int_type(__c, __idelim))
+ {
+ __sb->sbumpc();
+ ++_M_gcount;
+ }
+ else
+ __err |= ios_base::failbit;
+ }
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ }
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 243. get and getline when sentry reports failure.
+ if (__n > 0)
+ *__s = char_type();
+ if (!_M_gcount)
+ __err |= ios_base::failbit;
+ if (__err)
+ this->setstate(__err);
+ return *this;
+ }
+
+ // We provide three overloads, since the first two are much simpler
+ // than the general case. Also, the latter two can thus adopt the
+ // same "batchy" strategy used by getline above.
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ ignore(void)
+ {
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+
+ if (traits_type::eq_int_type(__sb->sbumpc(), __eof))
+ __err |= ios_base::eofbit;
+ else
+ _M_gcount = 1;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ ignore(streamsize __n)
+ {
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb && __n > 0)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ int_type __c = __sb->sgetc();
+
+ // N.B. On LFS-enabled platforms streamsize is still 32 bits
+ // wide: if we want to implement the standard mandated behavior
+ // for n == max() (see 27.6.1.3/24) we are at risk of signed
+ // integer overflow: thus these contortions. Also note that,
+ // by definition, when more than 2G chars are actually ignored,
+ // _M_gcount (the return value of gcount, that is) cannot be
+ // really correct, being unavoidably too small.
+ bool __large_ignore = false;
+ while (true)
+ {
+ while (_M_gcount < __n
+ && !traits_type::eq_int_type(__c, __eof))
+ {
+ ++_M_gcount;
+ __c = __sb->snextc();
+ }
+ if (__n == __gnu_cxx::__numeric_traits<streamsize>::__max
+ && !traits_type::eq_int_type(__c, __eof))
+ {
+ _M_gcount =
+ __gnu_cxx::__numeric_traits<streamsize>::__min;
+ __large_ignore = true;
+ }
+ else
+ break;
+ }
+
+ if (__large_ignore)
+ _M_gcount = __gnu_cxx::__numeric_traits<streamsize>::__max;
+
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ ignore(streamsize __n, int_type __delim)
+ {
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb && __n > 0)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ int_type __c = __sb->sgetc();
+
+ // See comment above.
+ bool __large_ignore = false;
+ while (true)
+ {
+ while (_M_gcount < __n
+ && !traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __delim))
+ {
+ ++_M_gcount;
+ __c = __sb->snextc();
+ }
+ if (__n == __gnu_cxx::__numeric_traits<streamsize>::__max
+ && !traits_type::eq_int_type(__c, __eof)
+ && !traits_type::eq_int_type(__c, __delim))
+ {
+ _M_gcount =
+ __gnu_cxx::__numeric_traits<streamsize>::__min;
+ __large_ignore = true;
+ }
+ else
+ break;
+ }
+
+ if (__large_ignore)
+ _M_gcount = __gnu_cxx::__numeric_traits<streamsize>::__max;
+
+ if (traits_type::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+ else if (traits_type::eq_int_type(__c, __delim))
+ {
+ if (_M_gcount
+ < __gnu_cxx::__numeric_traits<streamsize>::__max)
+ ++_M_gcount;
+ __sb->sbumpc();
+ }
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ typename basic_istream<_CharT, _Traits>::int_type
+ basic_istream<_CharT, _Traits>::
+ peek(void)
+ {
+ int_type __c = traits_type::eof();
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ __c = this->rdbuf()->sgetc();
+ if (traits_type::eq_int_type(__c, traits_type::eof()))
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return __c;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ read(char_type* __s, streamsize __n)
+ {
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ _M_gcount = this->rdbuf()->sgetn(__s, __n);
+ if (_M_gcount != __n)
+ __err |= (ios_base::eofbit | ios_base::failbit);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ streamsize
+ basic_istream<_CharT, _Traits>::
+ readsome(char_type* __s, streamsize __n)
+ {
+ _M_gcount = 0;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ // Cannot compare int_type with streamsize generically.
+ const streamsize __num = this->rdbuf()->in_avail();
+ if (__num > 0)
+ _M_gcount = this->rdbuf()->sgetn(__s, std::min(__num, __n));
+ else if (__num == -1)
+ __err |= ios_base::eofbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return _M_gcount;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ putback(char_type __c)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 60. What is a formatted input function?
+ _M_gcount = 0;
+ // Clear eofbit per N3168.
+ this->clear(this->rdstate() & ~ios_base::eofbit);
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ if (!__sb
+ || traits_type::eq_int_type(__sb->sputbackc(__c), __eof))
+ __err |= ios_base::badbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ unget(void)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 60. What is a formatted input function?
+ _M_gcount = 0;
+ // Clear eofbit per N3168.
+ this->clear(this->rdstate() & ~ios_base::eofbit);
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ const int_type __eof = traits_type::eof();
+ __streambuf_type* __sb = this->rdbuf();
+ if (!__sb
+ || traits_type::eq_int_type(__sb->sungetc(), __eof))
+ __err |= ios_base::badbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ int
+ basic_istream<_CharT, _Traits>::
+ sync(void)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
+ int __ret = -1;
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ __streambuf_type* __sb = this->rdbuf();
+ if (__sb)
+ {
+ if (__sb->pubsync() == -1)
+ __err |= ios_base::badbit;
+ else
+ __ret = 0;
+ }
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return __ret;
+ }
+
+ template<typename _CharT, typename _Traits>
+ typename basic_istream<_CharT, _Traits>::pos_type
+ basic_istream<_CharT, _Traits>::
+ tellg(void)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
+ pos_type __ret = pos_type(-1);
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ __try
+ {
+ if (!this->fail())
+ __ret = this->rdbuf()->pubseekoff(0, ios_base::cur,
+ ios_base::in);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ }
+ return __ret;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ seekg(pos_type __pos)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
+ // Clear eofbit per N3168.
+ this->clear(this->rdstate() & ~ios_base::eofbit);
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ if (!this->fail())
+ {
+ // 136. seekp, seekg setting wrong streams?
+ const pos_type __p = this->rdbuf()->pubseekpos(__pos,
+ ios_base::in);
+
+ // 129. Need error indication from seekp() and seekg()
+ if (__p == pos_type(off_type(-1)))
+ __err |= ios_base::failbit;
+ }
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ basic_istream<_CharT, _Traits>::
+ seekg(off_type __off, ios_base::seekdir __dir)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // DR60. Do not change _M_gcount.
+ // Clear eofbit per N3168.
+ this->clear(this->rdstate() & ~ios_base::eofbit);
+ sentry __cerb(*this, true);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ if (!this->fail())
+ {
+ // 136. seekp, seekg setting wrong streams?
+ const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir,
+ ios_base::in);
+
+ // 129. Need error indication from seekp() and seekg()
+ if (__p == pos_type(off_type(-1)))
+ __err |= ios_base::failbit;
+ }
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ this->_M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { this->_M_setstate(ios_base::badbit); }
+ if (__err)
+ this->setstate(__err);
+ }
+ return *this;
+ }
+
+ // 27.6.1.2.3 Character extraction templates
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
+ {
+ typedef basic_istream<_CharT, _Traits> __istream_type;
+ typedef typename __istream_type::int_type __int_type;
+
+ typename __istream_type::sentry __cerb(__in, false);
+ if (__cerb)
+ {
+ ios_base::iostate __err = ios_base::goodbit;
+ __try
+ {
+ const __int_type __cb = __in.rdbuf()->sbumpc();
+ if (!_Traits::eq_int_type(__cb, _Traits::eof()))
+ __c = _Traits::to_char_type(__cb);
+ else
+ __err |= (ios_base::eofbit | ios_base::failbit);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ __in._M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { __in._M_setstate(ios_base::badbit); }
+ if (__err)
+ __in.setstate(__err);
+ }
+ return __in;
+ }
+
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
+ {
+ typedef basic_istream<_CharT, _Traits> __istream_type;
+ typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
+ typedef typename _Traits::int_type int_type;
+ typedef _CharT char_type;
+ typedef ctype<_CharT> __ctype_type;
+
+ streamsize __extracted = 0;
+ ios_base::iostate __err = ios_base::goodbit;
+ typename __istream_type::sentry __cerb(__in, false);
+ if (__cerb)
+ {
+ __try
+ {
+ // Figure out how many characters to extract.
+ streamsize __num = __in.width();
+ if (__num <= 0)
+ __num = __gnu_cxx::__numeric_traits<streamsize>::__max;
+
+ const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+
+ const int_type __eof = _Traits::eof();
+ __streambuf_type* __sb = __in.rdbuf();
+ int_type __c = __sb->sgetc();
+
+ while (__extracted < __num - 1
+ && !_Traits::eq_int_type(__c, __eof)
+ && !__ct.is(ctype_base::space,
+ _Traits::to_char_type(__c)))
+ {
+ *__s++ = _Traits::to_char_type(__c);
+ ++__extracted;
+ __c = __sb->snextc();
+ }
+ if (_Traits::eq_int_type(__c, __eof))
+ __err |= ios_base::eofbit;
+
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 68. Extractors for char* should store null at end
+ *__s = char_type();
+ __in.width(0);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ __in._M_setstate(ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ { __in._M_setstate(ios_base::badbit); }
+ }
+ if (!__extracted)
+ __err |= ios_base::failbit;
+ if (__err)
+ __in.setstate(__err);
+ return __in;
+ }
+
+ // 27.6.1.4 Standard basic_istream manipulators
+ template<typename _CharT, typename _Traits>
+ basic_istream<_CharT, _Traits>&
+ ws(basic_istream<_CharT, _Traits>& __in)
+ {
+ typedef basic_istream<_CharT, _Traits> __istream_type;
+ typedef basic_streambuf<_CharT, _Traits> __streambuf_type;
+ typedef typename __istream_type::int_type __int_type;
+ typedef ctype<_CharT> __ctype_type;
+
+ const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+ const __int_type __eof = _Traits::eof();
+ __streambuf_type* __sb = __in.rdbuf();
+ __int_type __c = __sb->sgetc();
+
+ while (!_Traits::eq_int_type(__c, __eof)
+ && __ct.is(ctype_base::space, _Traits::to_char_type(__c)))
+ __c = __sb->snextc();
+
+ if (_Traits::eq_int_type(__c, __eof))
+ __in.setstate(ios_base::eofbit);
+ return __in;
+ }
+
+ // Inhibit implicit instantiations for required instantiations,
+ // which are defined via explicit instantiations elsewhere.
+#if _GLIBCXX_EXTERN_TEMPLATE
+ extern template class basic_istream<char>;
+ extern template istream& ws(istream&);
+ extern template istream& operator>>(istream&, char&);
+ extern template istream& operator>>(istream&, char*);
+ extern template istream& operator>>(istream&, unsigned char&);
+ extern template istream& operator>>(istream&, signed char&);
+ extern template istream& operator>>(istream&, unsigned char*);
+ extern template istream& operator>>(istream&, signed char*);
+
+ extern template istream& istream::_M_extract(unsigned short&);
+ extern template istream& istream::_M_extract(unsigned int&);
+ extern template istream& istream::_M_extract(long&);
+ extern template istream& istream::_M_extract(unsigned long&);
+ extern template istream& istream::_M_extract(bool&);
+#ifdef _GLIBCXX_USE_LONG_LONG
+ extern template istream& istream::_M_extract(long long&);
+ extern template istream& istream::_M_extract(unsigned long long&);
+#endif
+ extern template istream& istream::_M_extract(float&);
+ extern template istream& istream::_M_extract(double&);
+ extern template istream& istream::_M_extract(long double&);
+ extern template istream& istream::_M_extract(void*&);
+
+ extern template class basic_iostream<char>;
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+ extern template class basic_istream<wchar_t>;
+ extern template wistream& ws(wistream&);
+ extern template wistream& operator>>(wistream&, wchar_t&);
+ extern template wistream& operator>>(wistream&, wchar_t*);
+
+ extern template wistream& wistream::_M_extract(unsigned short&);
+ extern template wistream& wistream::_M_extract(unsigned int&);
+ extern template wistream& wistream::_M_extract(long&);
+ extern template wistream& wistream::_M_extract(unsigned long&);
+ extern template wistream& wistream::_M_extract(bool&);
+#ifdef _GLIBCXX_USE_LONG_LONG
+ extern template wistream& wistream::_M_extract(long long&);
+ extern template wistream& wistream::_M_extract(unsigned long long&);
+#endif
+ extern template wistream& wistream::_M_extract(float&);
+ extern template wistream& wistream::_M_extract(double&);
+ extern template wistream& wistream::_M_extract(long double&);
+ extern template wistream& wistream::_M_extract(void*&);
+
+ extern template class basic_iostream<wchar_t>;
+#endif
+#endif
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace std
+
+#endif
projects / cross.git / blobdiff