first commit
This commit is contained in:
Jose Caban
625
extern/stdcxx/4.2.1/include/istream
vendored
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625
extern/stdcxx/4.2.1/include/istream
vendored
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@@ -0,0 +1,625 @@
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// -*- C++ -*-
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/***************************************************************************
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*
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* istream - Declarations for the Standard Library istreams
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*
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* $Id: istream 638384 2008-03-18 14:27:54Z faridz $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 1994-2006 Rogue Wave Software.
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*
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**************************************************************************/
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#ifndef _RWSTD_ISTREAM_INCLUDED
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#define _RWSTD_ISTREAM_INCLUDED
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#if __GNUG__ >= 3
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# pragma GCC system_header
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#endif // gcc >= 3
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#ifndef _RWSTD_NO_REDUNDANT_DEFINITIONS
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# include <ostream>
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#endif // _RWSTD_NO_REDUNDANT_DEFINITIONS
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#include <loc/_num_get.h>
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#include <loc/_num_put.h>
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#include <rw/_basic_ios.h>
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#include <rw/_mutex.h>
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#include <rw/_traits.h>
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#include <rw/_defs.h>
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_RWSTD_NAMESPACE (__rw) {
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_EXPORT
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template <class _CharT, class _Traits, class _NativeType>
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_STD::basic_istream<_CharT, _Traits>&
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__rw_extract (_STD::basic_istream<_CharT, _Traits>&, _NativeType&);
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#ifdef _RWSTD_NO_EXT_NUM_GET
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template <class _CharT, class _Traits>
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inline _STD::basic_istream<_CharT, _Traits>&
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__rw_extract (_STD::basic_istream<_CharT, _Traits> &__strm,
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short &__val)
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{
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long __tmp = __val;
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__rw_extract (__strm, __tmp);
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_STD::ios_base::iostate __err = _STD::ios_base::goodbit;
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__val = __rw_check_overflow_short (__tmp, __strm.flags (), __err);
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if (_STD::ios_base::goodbit != __err)
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__strm.setstate (__err);
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return __strm;
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}
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template <class _CharT, class _Traits>
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inline _STD::basic_istream<_CharT, _Traits>&
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__rw_extract (_STD::basic_istream<_CharT, _Traits> &__strm,
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int &__val)
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{
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long __tmp = __val;
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__rw_extract (__strm, __tmp);
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_STD::ios_base::iostate __err = _STD::ios_base::goodbit;
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__val = __rw_check_overflow_int (__tmp, __strm.flags (), __err);
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if (_STD::ios_base::goodbit != __err)
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__strm.setstate (__err);
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return __strm;
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}
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#endif // _RWSTD_NO_EXT_NUM_GET
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} // namespace __rw
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_RWSTD_NAMESPACE (std) {
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#ifndef _RWSTD_IOSFWD_INCLUDED
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_EXPORT
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template <class _CharT, class _Traits = char_traits<_CharT> >
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class basic_istream;
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_EXPORT
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template <class _CharT, class _Traits = char_traits<_CharT> >
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class basic_iostream;
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typedef basic_istream<char> istream;
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typedef basic_iostream<char> iostream;
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# ifndef _RWSTD_NO_WCHAR_T
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typedef basic_istream<wchar_t> wistream;
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typedef basic_iostream<wchar_t> wiostream;
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# endif // _RWSTD_NO_WCHAR_T
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#endif // _RWSTD_IOSFWD_INCLUDED
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_EXPORT
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template <class _CharT, class _Traits>
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class basic_istream: virtual public basic_ios<_CharT, _Traits>
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{
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public:
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typedef _CharT char_type;
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typedef _Traits traits_type;
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typedef _TYPENAME traits_type::int_type int_type;
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typedef _TYPENAME traits_type::pos_type pos_type;
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typedef _TYPENAME traits_type::off_type off_type;
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// 27.6.1.1.1, p1
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_EXPLICIT basic_istream (basic_streambuf<char_type, traits_type> *__sb)
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: _C_gcount (0) {
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this->init (__sb);
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}
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// called from sentry's ctor to prepare stream before input
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basic_istream&
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_C_ipfx (bool, ios_base::iostate = ios_base::eofbit | ios_base::failbit);
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#ifdef _RWSTD_NO_NESTED_CLASS_ACCESS
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// allow access to ios_base::_C_bufmutex() if the resolution
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// of cwg issue 45 is not yet implemented
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struct sentry;
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friend struct sentry;
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#endif // _RWSTD_NO_NESTED_CLASS_ACCESS
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// 27.6.1.1.2
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struct sentry: _RW::__rw_guard {
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// 27.6.1.1.2, p2 - assumes 0 != __strm.rdbuf ()
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_EXPLICIT sentry (basic_istream &__strm, bool __noskipws = false)
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: _RW::__rw_guard (__strm._C_bufmutex ()),
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_C_ok (__strm._C_ipfx (__noskipws).good ()) { /* no-op */ }
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// 27.6.1.1.2, p8
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operator bool () const {
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return _C_ok;
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}
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private:
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bool _C_ok;
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sentry (const sentry&); // (normally) not defined
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void operator= (const sentry&); // (normally) not defined
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};
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// 27.6.1.2.3, p1, lwg issue 60
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basic_istream& operator>> (basic_istream& (*__pf)(basic_istream&)) {
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return (*__pf)(*this);
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}
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// 27.6.1.2.3, p2, lwg issue 60
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basic_istream& operator>>(basic_ios<char_type, traits_type>& (*__pf)
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(basic_ios<char_type, traits_type>&)) {
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return (*__pf)(*this), *this;
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}
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// 27.6.1.2.3, p4, lwg issue 60
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basic_istream& operator>> (ios_base& (*__pf)(ios_base&)) {
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return (*__pf)(*this), *this;
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}
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// 27.6.1.2.2 - Arithmetic Extractors
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#ifndef _RWSTD_NO_NATIVE_BOOL
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basic_istream& operator>> (bool &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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#endif // _RWSTD_NO_NATIVE_BOOL
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basic_istream& operator>>(short &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(unsigned short &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(int &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(unsigned int &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(long &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(unsigned long &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(float &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(double &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(long double &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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#ifdef _RWSTD_LONG_LONG
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basic_istream& operator>>(_RWSTD_LONG_LONG &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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basic_istream& operator>>(unsigned _RWSTD_LONG_LONG &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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#endif // _RWSTD_LONG_LONG
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basic_istream& operator>>(void* &__val) {
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return _RW::__rw_extract (*this, __val);
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}
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// 27.6.1.2.3, p13
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basic_istream& operator>>(basic_streambuf<char_type, traits_type>*);
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// 27.6.1.3 - Unformatted input functions
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// 27.6.1.3, p3
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int_type get ();
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// 27.6.1.3, p5
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basic_istream& get (char_type&);
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// 27.6.1.3, p7: extract at most n - 1 chars, delim not extracted
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// always null-terminate, fail if no char extracted
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basic_istream& get (char_type*, streamsize, char_type);
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// 27.6.1.3, p9: extract at most n - 1 chars
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// always null-terminate, fail if no char extracted
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basic_istream& get (char_type *__s, streamsize __n) {
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return get (__s, __n, this->widen ('\n'));
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}
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// 27.6.1.3, p12: extract up to but not including delim or eof
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basic_istream&
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get (basic_streambuf<char_type, traits_type>& __sb, char_type __delim) {
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return _C_get (__sb, traits_type::to_int_type (__delim));
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}
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// 27.6.1.3, p15
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basic_istream& get (basic_streambuf<char_type, traits_type>& __sb) {
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return get (__sb, this->widen ('\n'));
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}
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// 27.6.1.3, p16: extract at most n - 1, delim extracted but not stored
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// fail if either 0 or n - 1 chars have been extracted
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basic_istream& getline (char_type*, streamsize, char_type);
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// 27.6.1.3, p23
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basic_istream& getline (char_type *__s, streamsize __n) {
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return getline (__s, __n, this->widen ('\n'));
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}
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// 27.6.1.3, p24: extract at most n including delim
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basic_istream& ignore (streamsize __n = 1,
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int_type __delim = traits_type::eof ()) {
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// using extension - passing null pointer to ignore input
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return read (0, __n, __delim, _C_eatdelim | _C_eatnull);
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}
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// extension
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basic_istream& read (char_type*, streamsize, int_type, int);
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// 27.6.1.3, p28: extract at most n, fail on eof
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basic_istream& read (char_type*, streamsize);
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// 27.6.1.3, p30: extract at most min (rdbuf()->in_avail(), n))
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streamsize readsome (char_type*, streamsize);
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// 27.6.1.3, p27
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int_type peek ();
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// 27.6.1.3, p37
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pos_type tellg ();
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// 27.6.1.3, p38
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basic_istream& seekg (pos_type);
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// 27.6.1.3, p40
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basic_istream& seekg (off_type, ios_base::seekdir);
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// 27.6.1.3, p36
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int sync ();
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// 27.6.1.3, p32
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basic_istream& putback (char_type);
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// 27.6.1.3, p34
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basic_istream& unget ();
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// 27.6.1.3, p2
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streamsize gcount () const {
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return _C_gcount;
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}
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// flags used by read() extension, _C_ipfx(), and _C_unsafe_get()
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enum {
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_C_nullterm = 0x01, // null-terminate input
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_C_wsterm = 0x02, // terminate input on whitespace
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_C_skipws = 0x04, // skip leading whitespace
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_C_eatdelim = 0x08, // extract delimiter
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_C_faileof = 0x10, // set ios_base::failbit on eof
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_C_failend = 0x20, // set ios_base::failbit on end of buffer
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_C_failnoi = 0x40, // set ios_base::failbit on no input
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_C_eatnull = 0x80 // extract null char
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};
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// does not construct a sentry, does not affect gcount()
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// extracts character unless it is equal to __delim
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int_type _C_unsafe_get (streamsize* = 0,
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int_type = traits_type::eof (),
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int = 0);
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private:
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basic_istream& _C_get (basic_streambuf<char_type, traits_type>&, int_type);
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streamsize _C_gcount; // number of chars extracted
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};
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template<class _CharT, class _Traits>
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inline _TYPENAME basic_istream<_CharT, _Traits>::int_type
|
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basic_istream<_CharT, _Traits>::
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get ()
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{
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const sentry __ipfx (*this, true /* noskipws */);
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|
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if (__ipfx)
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return _C_unsafe_get (&_C_gcount, traits_type::eof (),
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_C_faileof | _C_eatnull);
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||||
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return traits_type::eof ();
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}
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||||
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||||
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template<class _CharT, class _Traits>
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inline basic_istream<_CharT, _Traits>&
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basic_istream<_CharT, _Traits>::
|
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get (char_type &__ch)
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{
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const int_type __c = get ();
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||||
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if (!traits_type::eq_int_type (__c, traits_type::eof ()))
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||||
traits_type::assign (__ch, traits_type::to_char_type (__c));
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return *this;
|
||||
}
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||||
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||||
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||||
template<class _CharT, class _Traits>
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inline basic_istream<_CharT, _Traits>&
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basic_istream<_CharT, _Traits>::seekg (pos_type __pos)
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{
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||||
_RWSTD_ASSERT (0 != this->rdbuf ());
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||||
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||||
if (!this->fail ()) {
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||||
_RWSTD_MT_GUARD (this->_C_bufmutex ());
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||||
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||||
// 27.6.1.3, p 38 requires that pubseekpos be called with
|
||||
// a single argument; the implemented behavior follows
|
||||
// the proposed resolution of lwg issue 136
|
||||
if (-1 == this->rdbuf ()->pubseekpos (__pos, ios_base::in))
|
||||
this->setstate (ios_base::failbit); // lwg issue 129
|
||||
}
|
||||
|
||||
return *this;
|
||||
}
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||||
|
||||
|
||||
template<class _CharT, class _Traits>
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||||
inline basic_istream<_CharT, _Traits>&
|
||||
basic_istream<_CharT, _Traits>::seekg (off_type __off, ios_base::seekdir __dir)
|
||||
{
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||||
_RWSTD_ASSERT (0 != this->rdbuf ());
|
||||
|
||||
if (!this->fail ()) {
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||||
_RWSTD_MT_GUARD (this->_C_bufmutex ());
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||||
|
||||
// 27.6.1.3, p 40 requires that pubseekoff be called with
|
||||
// two arguments; the implemented behavior follows
|
||||
// the proposed resolution of lwg issue 136
|
||||
if (-1 == this->rdbuf ()->pubseekoff (__off, __dir, ios_base::in))
|
||||
this->setstate (ios_base::failbit); // lwg issue 129
|
||||
}
|
||||
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||||
return *this;
|
||||
}
|
||||
|
||||
|
||||
template<class _CharT, class _Traits>
|
||||
inline basic_istream<_CharT, _Traits>&
|
||||
basic_istream<_CharT, _Traits>::
|
||||
operator>>(basic_streambuf<char_type, traits_type> *__sb)
|
||||
{
|
||||
// lwg issue 60: this is not a formatted input member function
|
||||
if (__sb)
|
||||
return _C_get (*__sb, traits_type::eof ());
|
||||
|
||||
this->setstate (ios_base::failbit);
|
||||
return *this;
|
||||
}
|
||||
|
||||
|
||||
template<class _CharT, class _Traits>
|
||||
inline _TYPENAME basic_istream<_CharT, _Traits>::int_type
|
||||
basic_istream<_CharT, _Traits>::peek ()
|
||||
{
|
||||
_RWSTD_ASSERT (0 != this->rdbuf ());
|
||||
|
||||
const sentry __ipfx (*this, true /* noskipws */);
|
||||
|
||||
int_type __c = traits_type::eof ();
|
||||
|
||||
if (__ipfx) {
|
||||
_TRY {
|
||||
__c = this->rdbuf ()->sgetc ();
|
||||
}
|
||||
_CATCH (...) {
|
||||
this->setstate (ios_base::badbit | _RW::__rw_rethrow);
|
||||
}
|
||||
}
|
||||
|
||||
if (traits_type::eq_int_type (__c, traits_type::eof ()))
|
||||
this->setstate (ios_base::eofbit);
|
||||
|
||||
return __c;
|
||||
}
|
||||
|
||||
|
||||
// 27.6.1.2.3, p10
|
||||
template <class _Traits>
|
||||
inline basic_istream<char, _Traits>&
|
||||
operator>> (basic_istream<char, _Traits> &__strm, unsigned char &__c)
|
||||
{
|
||||
return __strm >> _RWSTD_REINTERPRET_CAST (char&, __c);
|
||||
}
|
||||
|
||||
template <class _Traits>
|
||||
inline basic_istream<char, _Traits>&
|
||||
operator>> (basic_istream<char, _Traits> &__strm, signed char &__c)
|
||||
{
|
||||
return __strm >> _RWSTD_REINTERPRET_CAST (char&, __c);
|
||||
}
|
||||
|
||||
|
||||
// 27.6.1.2.3, p6
|
||||
template <class _Traits>
|
||||
inline basic_istream<char, _Traits>&
|
||||
operator>> (basic_istream<char, _Traits> &__strm, unsigned char *__s)
|
||||
{
|
||||
return __strm >> _RWSTD_REINTERPRET_CAST (char*, __s);
|
||||
}
|
||||
|
||||
|
||||
template <class _Traits>
|
||||
inline basic_istream<char, _Traits>&
|
||||
operator>> (basic_istream<char, _Traits> &__strm, signed char *__s)
|
||||
{
|
||||
return __strm >> _RWSTD_REINTERPRET_CAST (char*, __s);
|
||||
}
|
||||
|
||||
|
||||
// 27.6.1.2.3, p10
|
||||
template<class _CharT, class _Traits>
|
||||
inline basic_istream<_CharT, _Traits>&
|
||||
operator>> (basic_istream<_CharT, _Traits> &__strm, _CharT &__c)
|
||||
{
|
||||
// read the first non-space char, set failbit if none read
|
||||
__strm.read (&__c, 1, _Traits::eof (),
|
||||
__strm._C_skipws | __strm._C_failnoi | __strm._C_eatnull);
|
||||
return __strm;
|
||||
}
|
||||
|
||||
|
||||
// 27.6.1.2.3, p6
|
||||
template<class _CharT, class _Traits>
|
||||
inline basic_istream<_CharT, _Traits>&
|
||||
operator>> (basic_istream<_CharT, _Traits> &__strm, _CharT *__s)
|
||||
{
|
||||
_RWSTD_ASSERT (0 != __s);
|
||||
|
||||
// store at most this many chars including terminating null
|
||||
const streamsize __maxlen = __strm.width () ?
|
||||
__strm.width () : streamsize (_RWSTD_LONG_MAX - 1);
|
||||
|
||||
// read at most __maxlen non-space chars up to the first whitespace
|
||||
__strm.read (__s, __maxlen, _Traits::to_int_type (__strm.widen ('\n')),
|
||||
__strm._C_nullterm | __strm._C_wsterm
|
||||
| __strm._C_skipws | __strm._C_failnoi);
|
||||
|
||||
__strm.width (0);
|
||||
|
||||
return __strm;
|
||||
}
|
||||
|
||||
|
||||
// 27.6.1.4, p1
|
||||
template<class _CharT, class _Traits>
|
||||
inline basic_istream<_CharT, _Traits>&
|
||||
ws (basic_istream<_CharT, _Traits> &__strm)
|
||||
{
|
||||
// construct a sentry to flush tied stream (if any) and lock
|
||||
const _TYPENAME basic_istream<_CharT, _Traits>::sentry
|
||||
__ipfx (__strm, true /* noskipws */);
|
||||
|
||||
// if sentry is okay, skip whitespace and set eofbit
|
||||
// but not failbit if end-of-file is encountered
|
||||
if (__ipfx) {
|
||||
_TRY {
|
||||
__strm._C_ipfx (false, ios_base::eofbit);
|
||||
}
|
||||
_CATCH (...) {
|
||||
__strm.setstate (ios_base::badbit | _RW::__rw_rethrow);
|
||||
}
|
||||
}
|
||||
|
||||
return __strm;
|
||||
}
|
||||
|
||||
|
||||
// 27.6.1.5
|
||||
template<class _CharT, class _Traits /* = char_traits<_CharT> */>
|
||||
class basic_iostream
|
||||
: public basic_istream<_CharT, _Traits>,
|
||||
public basic_ostream<_CharT, _Traits>
|
||||
{
|
||||
public:
|
||||
|
||||
// prevent ambiguity between types defined in the bases
|
||||
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;
|
||||
|
||||
_EXPLICIT basic_iostream (basic_streambuf<_CharT, _Traits> *__sb)
|
||||
: basic_istream<_CharT, _Traits>(__sb),
|
||||
basic_ostream<_CharT, _Traits>(__sb)
|
||||
{ /* 27.6.1.5.1, p1 */ }
|
||||
};
|
||||
|
||||
} // namespace std
|
||||
|
||||
|
||||
#if _RWSTD_DEFINE_TEMPLATE_FIRST (_BASIC_ISTREAM)
|
||||
// implementation file included here instead of at the end
|
||||
// of the header to work around a IBM VAC++ 7.0 bug #448
|
||||
# include <istream.cc>
|
||||
#endif // _RWSTD_DEFINE_TEMPLATE_FIRST (_BASIC_ISTREAM)
|
||||
|
||||
|
||||
_RWSTD_NAMESPACE (std) {
|
||||
|
||||
#if _RWSTD_INSTANTIATE (_BASIC_ISTREAM, _CHAR)
|
||||
|
||||
_RWSTD_INSTANTIATE_2 (class _RWSTD_TI_EXPORT
|
||||
basic_istream<char, char_traits<char> >);
|
||||
|
||||
#endif // _RWSTD_INSTANTIATE (_BASIC_ISTREAM, _CHAR)
|
||||
|
||||
#if _RWSTD_INSTANTIATE (_BASIC_ISTREAM, _WCHAR_T)
|
||||
|
||||
_RWSTD_INSTANTIATE_2 (class _RWSTD_TI_EXPORT
|
||||
basic_istream<wchar_t, char_traits<wchar_t> >);
|
||||
|
||||
#endif // _RWSTD_INSTANTIATE (_BASIC_ISTREAM, _WCHAR_T)
|
||||
|
||||
} // namespace std
|
||||
|
||||
|
||||
#if _RWSTD_DEFINE_TEMPLATE_LAST (_BASIC_ISTREAM)
|
||||
# include <istream.cc>
|
||||
#endif // _RWSTD_DEFINE_TEMPLATE_LAST (_BASIC_ISTREAM)
|
||||
|
||||
|
||||
#ifndef _RWSTD_STRING_EXTRACTORS_INCLUDED
|
||||
# define _RWSTD_INCLUDE_STRING_EXTRACTORS
|
||||
# include <rw/_stringio.h>
|
||||
#endif // _RWSTD_STRING_EXTRACTORS_INCLUDED
|
||||
|
||||
|
||||
#endif // _RWSTD_ISTREAM_INCLUDED
|
||||
Reference in New Issue
Block a user